CN117312086A - Method, device, equipment and medium for adjusting USB interface of server - Google Patents

Abstract

The invention relates to the technical field of USB interface communication and discloses a method, device, equipment and medium for adjusting the USB interface of a server. The invention includes: monitoring the identification of external devices of the USB interface, and determining the occurrence of interface signals of the USB interface when an abnormality is identified. Abnormality; online adjustment of the preset parameters of the USB interface based on the preset eye diagram tool pre-installed in the service system, and obtaining the eye diagram signal of the preset eye diagram tool during the adjustment process; quality analysis of the eye diagram signal To determine whether the interface signal of the USB interface is normal under different preset parameters. When the interface signal of the USB interface is normal, the corresponding preset parameters are used as the operating parameters of the USB interface. The invention can promptly adjust the USB interface online when an abnormal situation occurs during the operation of the server, prevent abnormal interruption of the equipment due to long-term operation, and can reduce manpower, time and cost.

Description

A method, device, equipment and medium for adjusting a server USB interface

Technical field

The present invention relates to the technical field of USB interface communication, and specifically relates to an adjustment method, device, equipment and medium for a server USB interface.

Background technique

When the USB interface on the server is plugged into the device, due to the long-term operation of the device, the device is abnormally interrupted. The main reason is that the signal quality is not very good, so the signal integrity testing department needs to use special instruments to conduct USB eye diagram testing. After the test is completed, , give the data to the developer, the developer will refill the BIOS code based on the data, repackage and compile it, and then send it to the customer for use. This will consume a lot of time, increase costs, increase manpower and other issues.

Contents of the invention

In view of this, the present invention provides a method, device, equipment and medium for adjusting a server USB interface to solve the problems of low efficiency and high cost of existing USB interface adjustment methods.

In a first aspect, the present invention provides a method for adjusting a server USB interface. The method includes:

Monitor the server's service system's recognition of USB interface external devices. When an abnormality occurs in the recognition, it is determined that the interface signal of the USB interface is abnormal;

The preset parameters of the USB interface are adjusted online based on the preset eye diagram tool pre-installed in the service system, and the eye diagram signal of the preset eye diagram tool is obtained during the adjustment process. The eye diagram signal representation is accumulated and superimposed in the persistence method. Collect the bit results of the serial signal;

Quality analysis of the eye diagram signal is performed to determine whether the interface signal of the USB interface is normal under different preset parameters. When the interface signal of the USB interface is normal, the corresponding preset parameters are used as the operating parameters of the USB interface.

The method for adjusting the server USB interface provided by the embodiment of the present invention monitors the identification of external devices on the USB interface. When an abnormality occurs in the identification, the preset parameters of the USB interface are adjusted online through a preset eye diagram tool pre-installed in the service system. Adjustment, during the adjustment process, determine whether the interface signal of the USB interface is normal by performing quality analysis on the eye diagram signal of the preset eye diagram tool. When the interface signal is normal, the corresponding preset parameters will be used as the operating parameters of the USB interface. The present invention adjusts the USB interface online through a pre-developed eye diagram tool, can make timely adjustments when abnormal conditions occur during server operation, prevents abnormal interruption of equipment due to long-term operation, and can reduce manpower, time and costs. .

In an optional implementation manner, the preset parameters include: the ID number of the USB interface and the configuration parameters of the internal register of the USB interface.

In an optional implementation manner, the configuration parameters include: at least one of a high-speed transmission deviation parameter, a high-speed pre-emphasis deviation parameter and a half-bit pre-emphasis parameter.

By adjusting the register parameters of the USB interface in the server, the present invention can adjust the interface signal of the USB interface and improve the quality of the interface signal, thereby re-identifying its external device and preventing abnormal interruption of the device due to long-term operation. Condition.

In an optional implementation, the preset eye diagram tool is designed according to the layout structure of the USB interface in the server, and the preset eye diagram tool is used to read the ID number of the USB interface in the server and the configuration parameters of the internal register of the USB interface. , and obtain the parameter values adjusted by the user according to the preset parameter adjustment range of each configuration parameter.

By pre-designing the eye diagram tool according to the layout structure of the USB interface and deploying the eye diagram tool in the service system, the present invention can adjust the register parameters of the USB interface online while the service system is running without manual intervention, thereby reducing manpower, time and cost.

In an optional implementation, the eye diagram signal is captured through an oscilloscope, and a corresponding eye diagram pattern is generated.

In an optional implementation, the process of determining whether the interface signal of the USB interface under different preset parameters is normal by performing quality analysis on the eye diagram signal includes: if the opening of the eye diagram reaches the preset opening standard threshold, When the jitter rate reaches the preset jitter rate standard threshold and the duty cycle reaches the preset duty cycle standard threshold, the signal quality of the eye diagram signal reaches the preset conditions, and the interface signal corresponding to the USB interface is normal; if the opening of the eye diagram pattern does not reach If at least one of the following three situations occurs: the preset opening standard threshold, the jitter rate does not reach the preset jitter rate standard threshold, or the duty cycle does not reach the preset duty cycle standard threshold, then the signal quality of the eye diagram signal does not meet the preset conditions. , the interface signal corresponding to the USB interface is abnormal.

The present invention determines whether the interface signal of the USB interface is normal through the eye diagram signal, and uses an oscilloscope to capture the eye diagram signal to generate the corresponding eye diagram pattern. The eye diagram contains rich information, and inter-code crosstalk and inter-code crosstalk can be observed from the eye diagram. The influence of noise can reflect the overall characteristics of the digital signal, so that the quality of the USB interface can be estimated. Therefore, eye diagram analysis is the core of signal integrity analysis of high-speed interconnection systems. In addition, the characteristics of the receiving filter can also be adjusted using the eye diagram to reduce inter-code crosstalk and improve the transmission performance of the USB interface, thereby stably identifying external devices and preventing abnormal interruptions due to long-term operation of the device.

In an optional implementation, the abnormal situation includes: the external device of the USB interface cannot be recognized, or the recognition results are discontinuous.

The present invention considers that the external device of the USB interface may be abnormally interrupted due to the poor quality of the interface signal due to long-term operation. Therefore, when the external device cannot be recognized or the recognition is discontinuous, it is determined that the interface signal of the USB interface is present at this time. Abnormalities can be detected, so that the USB device can be adjusted online so that the external device can be stably recognized and run uninterrupted.

In a second aspect, the present invention provides a device for adjusting a server USB interface, including:

The signal monitoring module is used to monitor the recognition of USB interface external devices by the server's service system. When an abnormality is recognized, it is determined that the interface signal of the USB interface is abnormal;

The parameter adjustment module is used to adjust the preset parameters of the USB interface online based on the preset eye diagram tool pre-installed in the service system, and obtain the eye diagram signal of the preset eye diagram tool during the adjustment process, and the eye diagram signal characterization Use persistence mode to accumulate and overlay the bit results of the collected serial signals;

The operation judgment module is used to judge whether the interface signal of the USB interface is normal under different preset parameters by performing quality analysis on the eye diagram signal. When the interface signal of the USB interface is normal, the corresponding preset parameters are used as the operating parameters of the USB interface. .

The adjusting device for the server USB interface provided by the embodiment of the present invention monitors the recognition status of the external device of the USB interface. When an abnormality occurs in the recognition, the preset parameters of the USB interface are adjusted online through the preset eye diagram tool pre-installed in the service system. Adjustment, during the adjustment process, determine whether the interface signal of the USB interface is normal by performing quality analysis on the eye diagram signal of the preset eye diagram tool. When the interface signal is normal, the corresponding preset parameters will be used as the operating parameters of the USB interface. The present invention adjusts the USB interface online through a pre-developed eye diagram tool, can make timely adjustments when abnormal conditions occur during server operation, prevents abnormal interruption of equipment due to long-term operation, and can reduce manpower, time and costs. .

In a third aspect, the present invention provides a computer device, including: a memory and a processor. The memory and the processor are communicatively connected to each other. Computer instructions are stored in the memory, and the processor executes the computer instructions to execute the first aspect. Or the adjustment method of the server USB interface of any corresponding embodiment.

In a fourth aspect, the present invention provides a computer-readable storage medium. Computer instructions are stored on the computer-readable storage medium. The computer instructions are used to cause the computer to execute the server USB of the first aspect or any of its corresponding embodiments. Interface adjustment method.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic flowchart of a method for adjusting a server USB interface according to an embodiment of the present invention;

Figure 2 is a schematic diagram of an eye diagram of a method for adjusting a server USB interface according to an embodiment of the present invention;

Figure 3 is a structural block diagram of a server USB interface adjustment device according to an embodiment of the present invention;

Figure 4 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

Embodiments of the present invention are suitable for scenarios where a server runs an external device of its USB interface for a long time. Embodiments of the present invention provide a method for adjusting a server's USB interface. By adjusting the USB interface online, external devices can be stably recognized and operated, thereby reducing manpower, time and costs.

The present invention provides an embodiment of a method for adjusting a server USB interface. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a server service system such as a set of computer-executable instructions, and although A logical order is shown in the flowcharts, but in some cases, the steps shown or described may be performed in a different order than herein.

This embodiment provides a server USB interface adjustment method, which can be used in the above-mentioned server. Figure 1 is a flow chart of a server USB interface adjustment method according to an embodiment of the present invention. As shown in Figure 1, the process includes Follow these steps:

Step S101: Monitor the server's service system's recognition of the USB interface external device. When an abnormality occurs in the recognition, it is determined that the interface signal of the USB interface is abnormal.

Specifically, in this embodiment of the present invention, a different number of USB (Universal Serial Bus, Universal Serial Bus) interfaces are provided on the motherboard of the server for plugging in external devices and running them through the service system of the server motherboard. During the operation of the external device, the embodiment of the present invention monitors the service system's recognition of each USB interface external device in real time. When an abnormality occurs in the recognition, it is determined that the interface signal of the current USB interface is abnormal. Abnormal situations in embodiments of the present invention include: the external device cannot be recognized, or the recognition results are discontinuous (the external device can be recognized immediately, but sometimes the external device cannot be recognized), but is not limited to this.

Step S102: Adjust the preset parameters of the USB interface online based on the preset eye diagram tool pre-installed in the service system, and obtain the eye diagram signal of the preset eye diagram tool during the adjustment process. The eye diagram signal is represented by the persistence method. A cumulative overlay displays the bit results of the acquired serial signal.

Specifically, in the embodiment of the present invention, the eye diagram tool is designed in advance according to the layout structure of the USB interface in the server, and is installed in the service system in advance. When it is determined that the interface signal of a certain USB interface is abnormal, the preset parameters of the USB interface are adjusted online based on the eye diagram tool, and the eye diagram signal of the eye diagram tool is obtained during the adjustment process. Among them, the preset parameters of the USB interface include: the ID number of the USB interface and the configuration parameters of the internal register of the USB interface. The ID numbers represent different USB interfaces. The online adjustment is the configuration parameters of the internal register of the USB interface. The configuration parameters include: high-speed At least one of the transmission bias parameter (Per Port HS TX Bias), the high-speed pre-emphasis bias parameter (Per Port HS Pre-emphasis bias) and the half-bit pre-emphasis parameter (Per Port Half Bit Pre-emphasis), as an example only, but Not limited to this. The eye diagram tool reads the ID number of the USB interface in the server and the configuration parameters of the internal register of the USB interface, and sets the corresponding preset parameter adjustment range for each configuration parameter in advance. When the user performs operations according to the preset parameter adjustment range of each configuration parameter Parameter adjustment: obtain the parameter values adjusted by the user. Among them, the default parameter adjustment range set for each configuration parameter in this embodiment is as follows: Per Port HS TX Bias is bits [10:8] (3bits (0-7 range)), Per Port HSPre-emphasis bias is bits [13:11](3bits-(0-7 range)), Per Port Half Bit Pre-emphasis is bits[14](1bits(0-1 range)).

Step S103, perform quality analysis on the eye diagram signal to determine whether the interface signal of the USB interface is normal under different preset parameters. When the interface signal of the USB interface is normal, the corresponding preset parameters are used as operating parameters of the USB interface.

Specifically, in the embodiment of the present invention, the eye diagram signal of the eye diagram tool is captured through an oscilloscope, and the corresponding eye diagram pattern is generated. The eye diagram contains a wealth of information. The impact of inter-symbol crosstalk and noise can be observed from the eye diagram, which reflects the overall characteristics of the digital signal, so that the quality of the USB interface can be estimated. Therefore, eye diagram analysis is an important part of high-speed interconnection. The core of system signal integrity analysis. In addition, you can also use this graph to adjust the characteristics of the receiving filter to reduce inter-symbol crosstalk and improve the transmission performance of the USB interface. The embodiment of the present invention determines the eye diagram signal quality through the eye diagram opening, jitter rate and duty cycle, because the eye diagram opening is related to jitter and BER (bit error probability). The larger the eye diagram opening, the brighter the noise and jitter. The larger the allowable error is, the better the judgment sensitivity of the receiver is. The duty cycle determined by the width of the top of the eye, the fundus of the eye, and the conversion area indicates that the judgment sensitivity of the receiver is reduced. As shown in Figure 2, if the opening of the eye diagram pattern reaches the preset standard opening threshold, the jitter rate reaches the preset jitter rate standard threshold, and the duty cycle reaches the preset duty cycle standard threshold, then the signal quality of the eye diagram signal reaches the preset standard threshold. Assume that the interface signal corresponding to the USB interface is normal; if the opening of the eye pattern does not reach the preset opening standard threshold, the jitter rate does not reach the preset jitter rate standard threshold, or the duty cycle does not reach the preset duty cycle standard threshold. If at least one of the conditions occurs, the signal quality of the eye diagram signal does not meet the preset conditions, and the interface signal corresponding to the USB interface is abnormal. The embodiment of the present invention determines the preset standard thresholds for opening, jitter rate, and duty cycle based on the actual experience of engineering personnel. At this time, the adjusted preset parameters are used as operating parameters of the USB interface.

The method for adjusting the server USB interface provided by the embodiment of the present invention monitors the identification of external devices on the USB interface. When an abnormality occurs in the identification, the preset parameters of the USB interface are adjusted online through a preset eye diagram tool pre-installed in the service system. Adjustment, during the adjustment process, determine whether the interface signal of the USB interface is normal by performing quality analysis on the eye diagram signal of the preset eye diagram tool. When the interface signal is normal, the corresponding preset parameters will be used as the operating parameters of the USB interface. The present invention adjusts the USB interface online through a pre-developed eye diagram tool, can make timely adjustments when abnormal conditions occur during server operation, prevents abnormal interruption of equipment due to long-term operation, and can reduce manpower, time and costs. .

This embodiment provides a server USB interface adjustment device, as shown in Figure 3, including:

The signal monitoring module 301 is used to monitor the recognition of USB interface external devices by the server's service system. When an abnormality is recognized, it is determined that the interface signal of the USB interface is abnormal;

The parameter adjustment module 302 is used to adjust the preset parameters of the USB interface online based on the preset eye diagram tool pre-installed in the service system, and obtain the eye diagram signal of the preset eye diagram tool during the adjustment process. The eye diagram signal The representation uses persistence mode to accumulate and superimpose the bit results of the collected serial signals;

The operation judgment module 303 is used to judge whether the interface signal of the USB interface under different preset parameters is normal by performing quality analysis on the eye diagram signal. When the interface signal of the USB interface is normal, the corresponding preset parameters are used as the operation of the USB interface. parameter.

In an optional implementation, the abnormal conditions in the signal monitoring module 301 include: the external device of the USB interface cannot be recognized, or the recognition results are discontinuous.

In an optional implementation, the preset parameters in the parameter adjustment module 302 include: the ID number of the USB interface and the configuration parameters of the internal register of the USB interface.

In an optional implementation, the parameters configured in the parameter adjustment module 302 include: at least one of a high-speed transmission deviation parameter, a high-speed pre-emphasis deviation parameter and a half-bit pre-emphasis parameter.

In an optional implementation, the preset eye diagram tool in the parameter adjustment module 302 is designed according to the layout structure of the USB interface in the server, and is used to read the ID number of the USB interface in the server and the configuration parameters of the internal register of the USB interface. , and obtain the parameter values adjusted by the user according to the preset parameter adjustment range of each configuration parameter.

In an optional implementation, the eye diagram signal of the operation judgment module 303 is captured through an oscilloscope, and a corresponding eye diagram graphic is generated. If the opening of the eye diagram graphic reaches the preset opening standard threshold and the jitter rate reaches the preset If the jitter rate reaches the standard threshold and the duty cycle reaches the preset duty cycle standard threshold, then the signal quality of the eye diagram signal reaches the preset condition and the interface signal corresponding to the USB interface is normal; if the opening of the eye diagram does not reach the preset opening standard threshold If at least one of the three situations occurs, the jitter rate does not reach the preset jitter rate standard threshold or the duty cycle does not reach the preset duty cycle standard threshold, then the signal quality of the eye diagram signal does not meet the preset conditions, corresponding to the USB interface The interface signal is abnormal.

Further functional descriptions of the above-mentioned modules and units are the same as those in the above-mentioned corresponding embodiments, and will not be described again here.

The server USB interface adjustment device in this embodiment is presented in the form of a functional unit. The unit here refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor that executes one or more software or fixed programs. and memory, and/or other devices that can provide the above functions.

An embodiment of the present invention also provides a computer device having the adjustment device of the server USB interface shown in Figure 3 above.

Please refer to Figure 4. Figure 4 is a schematic structural diagram of a computer device provided by an optional embodiment of the present invention. As shown in Figure 4, the computer device includes: one or more processors 10, a memory 20, and a device for connecting The interfaces of each component include high-speed interfaces and low-speed interfaces. Various components communicate with each other using different buses and can be installed on a common motherboard or in other ways as needed. The processor may process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In some alternative implementations, multiple processors and/or multiple buses may be used with multiple memories and multiple memories, if desired. Likewise, multiple computer devices may be connected, each device providing part of the necessary operation (eg, as a server array, a set of blade servers, or a multi-processor system). In Figure 4, a processor 10 is taken as an example.

The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The above-mentioned hardware chip can be an application-specific integrated circuit, a programmable logic device or a combination thereof. The above-mentioned programmable logic device may be a complex programmable logic device, a field programmable logic gate array, a general array logic or any combination thereof.

The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

The memory 20 may include a program storage area and a data storage area, where the program storage area may store an operating system and an application program required for at least one function; the storage data area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage device. In some optional implementations, the memory 20 may optionally include memories remotely located relative to the processor 10 , and these remote memories may be connected to the computer device through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memories.

The computer device also includes a communication interface 30 for the computer device to communicate with other devices or communication networks.

Embodiments of the present invention also provide a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware or firmware, or can be recorded in a storage medium, or can be implemented as original storage downloaded through the network. Computer code in a remote storage medium or a non-transitory machine-readable storage medium and to be stored in a local storage medium such that the methods described herein may be stored on a computer using a general purpose computer, a special purpose processor, or programmable or special purpose hardware Such software processing on storage media. The storage medium may be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk or a solid state drive, etc.; further, the storage medium may also include a combination of the above types of memories. It can be understood that a computer, processor, microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, processor or hardware, the above implementations are implemented. The method illustrated.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the appended rights. within the scope of the requirements.

Claims (10)

1. A method for adjusting a USB interface of a server, the method comprising:

monitoring the identification condition of a service system of a server on external equipment of a USB interface, and judging that an interface signal of the USB interface is abnormal when the identification condition is abnormal;

on-line adjustment is carried out on preset parameters of the USB interface based on a preset eye pattern tool which is pre-installed in a service system, an eye pattern signal of the preset eye pattern tool is obtained in the adjustment process, and the eye pattern signal represents bit results of the serial signals which are collected by accumulating and superposing in an afterglow mode;

and judging whether the interface signals of the USB interface are normal or not under different preset parameters by carrying out quality analysis on the eye pattern signals, and taking the corresponding preset parameters as the operation parameters of the USB interface when the interface signals of the USB interface are normal.

2. The method of claim 1, wherein the preset parameters include: the ID number of the USB interface and the configuration parameters of the internal register of the USB interface.

3. The method of claim 2, wherein the configuration parameters comprise: at least one of a high speed transmission bias parameter, a high speed pre-emphasis bias parameter, and a half-bit pre-emphasis parameter.

4. The method of claim 3, wherein the preset eye diagram tool is designed according to a layout structure of the USB interface in the server, and the preset eye diagram tool is configured to read an ID number of the USB interface in the server and a configuration parameter of an internal register of the USB interface, and obtain a parameter value adjusted by a user according to a preset parameter adjustment range of each configuration parameter.

5. The method of claim 1, wherein the eye pattern signal is captured by an oscilloscope and a corresponding eye pattern is generated.

6. The method of claim 5, wherein the determining whether the interface signal of the USB interface is normal under different preset parameters by performing quality analysis on the eye signal comprises: if the opening degree of the eye pattern reaches a preset opening degree standard threshold, the jitter rate reaches a preset jitter rate standard threshold and the duty cycle reaches a preset duty cycle standard threshold, the signal quality of the eye pattern signal reaches a preset condition, and the interface signal corresponding to the USB interface is normal;

if at least one of the opening degree of the eye pattern does not reach the preset opening degree standard threshold value, the jitter rate does not reach the preset jitter rate standard threshold value or the duty ratio does not reach the preset duty ratio standard threshold value occurs, the signal quality of the eye pattern signal does not reach the preset condition, and the interface signal corresponding to the USB interface is abnormal.

7. The method of claim 1, wherein the abnormal condition comprises: and identifying the external equipment which cannot reach the USB interface, or identifying that the result is discontinuous.

8. An adjusting device for a USB interface of a server, the device comprising:

the signal monitoring module is used for monitoring the identification condition of the service system of the server to the USB interface external equipment, and judging that the interface signal of the USB interface is abnormal when the abnormal condition is identified;

the parameter adjusting module is used for carrying out on-line adjustment on preset parameters of the USB interface based on a preset eye pattern tool which is pre-installed in the service system, and acquiring an eye pattern signal of the preset eye pattern tool in the adjustment process, wherein the eye pattern signal represents bit results of the serial signals which are accumulated and overlapped in an afterglow mode;

and the operation judging module is used for judging whether the interface signals of the USB interface are normal or not under different preset parameters by carrying out quality analysis on the eye pattern signals, and when the interface signals of the USB interface are normal, the corresponding preset parameters are used as the operation parameters of the USB interface.

9. A computer device, comprising:

a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method for adjusting a USB interface of a server according to any one of claims 1 to 7.

10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the method of adjusting a USB interface of a server according to any one of claims 1 to 7.