CN102623856A - Multi-connector integrated computer switch cable - Google Patents

Abstract

The invention relates to a computer switcher cable integrated by multiple connectors, which can be connected with a computer and a computer switcher and comprises: a first video connector, a second video connector, a main cable, a first branch cable, a first PS/2 connector, a second branch cable, a second PS/2 connector, and at least one USB connector. In the KVM cable, the unused pin terminal, the grounding pin terminal and the unconnected pin terminal of the first video connector are utilized, and a detection resistor and a diode element are arranged, so that a user can select to connect a PS/2 connector or a USB connector to a computer when using the KVM cable, and further control more than two computer hosts through the KVM.

Description

Multi-connector integrated computer switch cable

technical field

The invention relates to a multifunctional computer switch cable, in particular to a computer switch cable integrated with multiple connectors.

Background technique

With the development of information technology, the application of computers has become quite common. Whether it is a family, a studio, a company, or an enterprise, all use computers to handle various affairs. Moreover, based on work requirements, a single user may use two computers at the same time. At this time, the user usually uses a computer switch (KVM) to connect the two computers so that the two computers can share one A keyboard, a mouse, and a monitor are provided to facilitate the user to control two computers at the same time.

In addition, in order to cooperate with various connector cable interface forms, such as: VGA connector cables used by monitors and PS/2 connector cables used by keyboards/mouses, manufacturers have introduced a multi-functional computer switcher In this way, with the multifunctional computer switcher cable, the user can reduce the number of connector cables used when using the computer switcher. Please refer to FIG. 1, which is a bottom view of an existing multifunctional computer switch cable. As shown in FIG. 1, the multifunctional computer switch cable 1' includes: a first video connector 11 ', a second video connector 12', a main cable 13', a keyboard PS/2 connector 14', a first branch cable 15', a mouse PS/2 connector 16' and a second Branch cable 17'.

Referring to Fig. 1 continuously, in the above-mentioned multifunctional computer switch cable 1', the first video connector 11' is used to connect a computer switch (KVM) 2'. The second video connector 12' is connected to the first video connector 11' through the main cable 13', wherein the second video connector 12' is used to connect a video connection port 31' of a computer 3'; Moreover, the main cable 13' further extends two branch cables near the second video connector 12', which are respectively the first branch cable 15' and the second branch cable 17'. The keyboard PS/2 connector 14' and the mouse PS/2 connector 16' are respectively connected to the main cable 13' through the first branch cable 15' and the second branch cable 17', wherein the keyboard The PS/2 connector 14' is used to connect the keyboard PS/2 port of the computer 3'; and the mouse PS/2 connector 16' is used to connect the mouse PS/2 port of the computer 3'. In this way, with the above-mentioned conventional multifunctional computer switcher cable 1', when the user uses the computer switcher 2', there is no need to prepare two additional PS/2 connector cables to connect to the computer 3 respectively '.

In addition, as we all know, the mouse and keyboard sold on the market are not limited to the PS/2 interface, and the mouse and keyboard of the USB interface are also sold at the same time. Please refer to Fig. 2, which is a bottom view of a multifunctional computer switch cable with a USB connector, as shown in Fig. 1 and Fig. 2, in order to make the above multifunctional computer switch cable 1' comparable The manufacturer replaces the keyboard PS/2 connector 14' and the mouse PS/2 connector 16' with a USB connector 14a', so that the user can connect the USB The switch 14a' is connected to the USB port of the computer 3'; however, the multifunctional computer switch cable with USB connectors can only carry USB connectors.

Although the above two existing conventional multifunctional computer switch cables can provide users with different requirements, if the mouse connected to the computer 3' is a mouse with a USB interface, and the computer 3' is connected to If the keyboard is a PS/2 interface keyboard, the user cannot use the multi-functional computer switch cable 1' to connect the computer switch 2' and the computer 3'; in this case, the user must be forced to To buy a set of keyboard with USB interface or a set of mouse with PS/2 interface, you can use the multifunctional computer switcher cable 1' to transmit signals between the computer switcher 2' and the computer 3'; It is quite inconvenient for users.

It can be seen that the above-mentioned existing multifunctional computer switch cable obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new type of multi-connector integrated computer switch cable is one of the current important research and development topics, and has also become a goal that the industry needs to improve.

Contents of the invention

The object of the present invention is to provide a multi-connector integrated computer switcher cable, which can connect a computer and a computer switcher, wherein the unused pin terminals, ground pin terminals and unconnected pin terminals of the video connector are used Pin terminal, and a detection resistor and a diode element are set inside the USB connector, so that when using the computer switch cable, the user can choose to connect the PS/2 connector or the USB connector to a computer, and then simultaneously control two or more computer hosts through the computer switcher.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the present invention, a multi-connector integrated computer switch cable includes: a first video connector for connecting a video connection port of a computer switch; a second video connector for A video connection port connected to a computer; a main cable connecting the first video connector and the second video connector to transmit signals between the first video connector and the second video connector; a first branch cable, one end of which is extended from the main cable and connected to the second video connector; a first PS/2 connector, connected to the other end of the first branch cable, and used to connect to a first A PS/2 connection port; a second branch cable, one end of which is extended from the main cable and connected to the second video connector; a second PS/2 connector, connected to the second branch cable The other end is used to connect to a second PS/2 connection port of the computer; and at least one USB connector is connected to the second video connector through at least one third branch cable, and the third branch cable is connected by The main cable extends out, and the USB connector is used to connect to a USB connection port of the computer; wherein, through the first branch cable, a first unused terminal and a first unconnected terminal of the first video connector terminal, a second unconnected terminal, and a first ground terminal are respectively electrically connected to a first PS/2 data terminal, a first PS/2 clock terminal, and a first PS/2 connector of the first PS/2 connector. a PS/2 voltage terminal, and a first PS/2 ground terminal; and, through the first branch cable, the first video connector and the third branch cable, the first PS/2 data terminal, the The first PS/2 clock terminal, the first PS/2 voltage terminal, and the first PS/2 ground terminal are electrically connected to a USB negative data terminal, a USB positive data terminal, and a USB positive data terminal of the USB connector, respectively. A USB voltage terminal, and a USB ground terminal; wherein, a diode element is arranged between the first PS/2 voltage terminal and the USB voltage terminal; and one end of a detection resistor is simultaneously coupled to the diode element and the USB voltage terminal , the other end of the detection resistor is electrically connected to a second ground terminal of the first video connector.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned multi-connector integrated computer switch cable, the first video connector is any one of the following: a VGA connector, a DVI connector and an HDMI connector.

In the aforementioned multi-connector integrated computer switch cable, the second video connector is any one of the following: a VGA connector, a DVI connector and an HDMI connector.

In the aforementioned multi-connector integrated computer switch cable, the first PS/2 connector is used to transmit a keyboard input/output data.

In the aforementioned multi-connector integrated computer switch cable, the second PS/2 connector is used to transmit a mouse input/output data.

In the aforementioned multi-connector integrated computer switch cable, the USB connector is used to transmit any of the following data: keyboard input/output data and mouse input/output data.

In the aforementioned multi-connector integrated computer switch cable, the second ground terminal is used as a level detection terminal.

In the aforementioned multi-connector integrated computer switch cable, when the USB connector is connected to the USB port of the computer, the second ground terminal will detect a high-level signal through the detection resistor .

The aforementioned multi-connector integrated computer switch cable, wherein when the second PS/2 connector and the first PS/2 connector are connected to the second PS/2 connection port of the computer and the first PS/2 When 2 is connected to the port, the second ground terminal cannot detect the high-level signal through the detection resistor.

In the aforementioned multi-connector integrated computer switch cable, the second unconnected terminal is used as a voltage supply terminal for providing voltage to the first PS/2 voltage terminal and the USB voltage terminal.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. By virtue of the above technical solutions, the multi-connector integrated computer switch cable of the present invention has at least the following advantages and beneficial effects:

1. The present invention integrates two PS/2 connectors and one USB connector into the same computer switch cable, which can facilitate users to selectively connect a PS/2 interface mouse and a PS/2 interface keyboard to the computer, or connect a keyboard/mouse with a USB interface to the computer, and then control two or more computer hosts at the same time through the computer switcher.

2. The present invention utilizes the unused pin terminal, the ground pin terminal and the unconnected pin terminal of the first video connector, and at the same time, by arranging the detection resistor and the diode element in the USB connector, In this way, by detecting the high-level signal through the level detection terminal of the first video connector, the computer can further identify that the connector currently connected to the computer connection port is a PS/2 interface connector or a USB interface connector .

3. According to the above-mentioned point 2, no matter whether the first video connector and the second video connector are a VGA connector, a DVI connector or an HDMI connector, the first video connector can use the unused pin terminal, the ground pin terminal and the unconnected pin terminal, and by setting the detection resistor and the diode element in the USB connector to detect the level of the first video connector The detection terminal detects the high-level signal, so that the computer can recognize that the connector currently connected to the computer connection port is a PS/2 interface connector or a USB interface connector.

In summary, the present invention can connect a computer and a computer switcher, and includes: a first video connector, a second video connector, a main cable, a first branch cable, a first PS /2 connector, a second branch cable, a second PS/2 connector, and at least one USB connector. In the computer switcher cable, using the unused pin terminal, the ground pin terminal and the unconnected pin terminal of the first video connector, and through the setting of a detection resistor and a diode element, the user can When using a computer switcher cable, you can choose to connect a PS/2 connector or a USB connector to a computer, and then control two or more computer hosts at the same time through the computer switcher. The present invention has significant progress in technology, and has obvious positive effects, and is a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a bottom view of a conventional multifunctional computer switcher cable.

Figure 2 is a bottom view of a multifunctional computer switcher cable with USB connectors.

Fig. 3 is a bottom view of a multi-connector integrated computer switch cable of the present invention.

Fig. 4A is a front view of a VGA connector.

Figure 4B is a front view of a PS/2 connector.

Fig. 4C is a front view of a USB connector.

Fig. 5 is a first video connector, a second PS/2 connector, a first PS/2 connector, and a pin voltage between a USB connector of a multi-connector integrated computer switcher cable Schematic diagram of sexual connections.

1: Multi-connector integrated computer switch cable

11: First video connector 12: Second video connector

13: Main cable 14: First branch cable

15: The first PS/2 connector 16: The second branch cable

17: Second PS/2 connector 18: USB connector

19: Third branch cable D: Diode element

R.: Detection resistor 2: Computer switcher

21: Video connection port 3: Computer

31: Video connection port 32: The first PS/2 connection port

33: Second PS/2 connection port 34: USB connection port

111: The first unused terminal 112: The first unconnected terminal

113: The second unconnected terminal 114: The first grounding terminal

115: The second grounding terminal 151: The first PS/2 data terminal

152: The first PS/2 clock terminal 153: The first PS/2 voltage terminal

154: The first PS/2 grounding terminal 171: The second PS/2 data terminal

172: Second PS/2 clock terminal 173: Second PS/2 voltage terminal

174: Second PS/2 ground terminal 181: USB negative data terminal

182: USB positive data terminal 183: USB ground terminal

1': Multifunctional computer switch cable 11': First video connector

12': Second video connector 13': Main cable

14': Keyboard PS/2 connector 15': The first branch cable

16': Mouse PS/2 connector 17': Second branch cable

14a’: Keyboard USB connector 16a’: Mouse USB connector

Detailed ways

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation of the multi-connector integrated computer switch cable proposed according to the present invention, Structure, characteristic and effect thereof are as follows in detail.

Please refer to FIG. 3 , which is a bottom view of a multi-connector integrated computer switch cable of the present invention. As shown in FIG. 3 , the multi-connector integrated computer switch cable 1 includes: a first video connection Device 11, a second video connector 12, a main cable 13, a first branch cable 14, a first PS/2 connector 15, a second branch cable 16, a second PS/2 connection device 17, and a USB connector 18. The first video connector 11 and the second video connector 12 are the same type of video connector, which can be a VGA connector, a DVI connector or an HDMI connector. The VGA connectors of the pin terminals serve as the first video connector 11 and the second video connector 12 . And, as shown in FIG. 3 , the first video connector 11 is used to connect a video connection port 21 of a computer switch (KVM) 2, and the second video connector 12 is used to connect a video connection port of a computer 3 31.

The main cable 13 connects the first video connector 11 and the second video connector 12 to transmit signals between the first video connector 11 and the second video connector 12 . One end of the first branch cable 14 is extended from the main cable 13 and connected to the second video connector 12, and the other end of the first branch cable 14 is further connected to the first PS/2 connector 15 , so that the first PS/2 connector 15 can be used to connect a first PS/2 connection port 32 of the computer 3 to transmit a keyboard input/output data. One end of the second branch cable 16 is similarly extended from the main cable 13, and this end is connected to the second video connector 12, and the other end of the first branch cable 14 is further connected to the second PS/ 2 connector 17, so that the second PS/2 connector 17 can be used to connect a second PS/2 connection port 33 of the computer 3 to transmit a mouse input/output data. And, the USB connector 18 is connected to the second video connector 12 by a third branch cable 19, and the third branch cable 19 is extended from the main cable 13, so that the USB connector 18 can be used A USB connection port 34 of the computer 3 is connected to transmit the keyboard input/output data or the mouse input/output data.

Continue referring to FIG. 3 , and please also refer to FIG. 4A , FIG. 4B and FIG. 4C , which are front views of a VGA connector, a PS/2 connector and a USB connector. As shown in FIG. 4A, for the first video connector 11 having 15 pin terminals, the 15 pins are arranged in three rows, wherein the representative pin numbers are 1, 5, 11, and 15 are indicated in Fig. 4A. Moreover, in the first video connector 11, the terminal with pin number 4 is used as a first unused terminal 111, the terminal with pin number 5 is used as a first unconnected terminal 112, and the terminal with pin number 6 is used as a first unused terminal 111. For the second ground terminal 115 , the terminal with pin number 9 serves as a second unconnected terminal 113 , and the terminal with pin number 10 serves as a first ground terminal 114 .

And, as shown in FIG. 4B, for the first PS/2 connector 15 having 6 pin terminals, the 6 pins it has are arranged in a ring shape, wherein all the pins are numbered 1-6 Shown in Figure 4B. In the first PS/2 connector 15, the terminal with the pin number 1 is used as a first PS/2 data terminal 151, the terminal with the pin number 3 is used as a first PS/2 ground terminal 154, and the pin number is 4 The terminal of pin number 5 serves as a first PS/2 voltage terminal 153 , and the terminal of pin number 5 serves as a first PS/2 clock terminal 152 . In addition, it must be particularly noted that the number of pins and pin numbers of the second PS/2 connector 17 are the same as those of the first PS/2 connector 15; therefore, as shown in FIG. 4B, for the second PS/2 As far as the connector 17 is concerned, the terminal of its pin number 1 is used as a second PS/2 data terminal 171, the terminal of its pin number 3 is used as a second PS/2 grounding terminal 174, and the terminal of its pin number 4 is used as a first Two PS/2 voltage terminals 173 , the terminal with pin number 5 is used as a second PS/2 clock terminal 172 .

In addition, as shown in FIG. 4C , for the USB connector 18 with 4 pin terminals, its 4 pins are arranged in a row, wherein all 4 pins are numbered in FIG. 4C . Moreover, in the USB connector 18, the terminal with pin number 1 is used as a USB voltage terminal 183, the terminal with pin number 2 is used as a USB negative data terminal 181, and the terminal with pin number 3 is used as a USB positive data terminal 182. , and its pin number 4 serves as a USB grounding terminal 184 .

In this way, through the above-mentioned number of pins, pin numbers and pins of the first video connector 11, the first PS/2 connector 15, the second PS/2 connector 17, and the USB connector 18 The definition will help to understand how the present invention integrates the USB connector 18 and the two PS/2 connectors 17 into the first video connector 11 . Please continue to refer to FIG. 3, FIG. 4A, FIG. 4B, and FIG. 4C. At the same time, please refer to FIG. 5 again, which is the first video connector, the second PS/2 connector, the first PS/2 connector, and the USB Schematic diagram of the electrical connection between the pins of the connector. In the multi-connector integrated computer switch cable 1 of the present invention, as shown in FIG. 3, FIG. 4A, FIG. 4B, FIG. 4C, and FIG. The first unused terminal 111, the first unconnected terminal 112, the second unconnected terminal 113, and the first ground terminal 114 of the connector 11 are respectively electrically connected to the first PS/2 connector 15. The first PS/2 data terminal 151, the first PS/2 clock terminal 152, the first PS/2 voltage terminal 153, and the first PS/2 ground terminal 154; and, through the first branch Cable 14, the first video connector 11 and the third branch cable 19, the first PS/2 data terminal 151, the first PS/2 clock terminal 152, the first PS/2 voltage terminal 153, and the second A PS/2 ground terminal 154 is electrically connected to the USB negative data terminal 181 , the USB positive data terminal 182 , the USB voltage terminal 183 , and the USB ground terminal 184 of the USB connector 18 .

Continue to refer to FIG. 3 , FIG. 4A , FIG. 4B , FIG. 4C , and FIG. 5 at the same time. As shown in FIG. 5 , a diode element D is provided between the first PS/2 voltage terminal 153 and the USB voltage terminal 183; and One end of a detection resistor R is connected to the diode element D and the USB voltage terminal 183 at the same time, and the other end of the detection resistor R is electrically connected to the second ground terminal 115 of the first video connector 11 . In this way, by setting the detection resistor R and the diode element D in the USB connector 18, the user can choose to use the PS/2 connector when using the multi-connector integrated computer switch cable 1 or USB connector to the computer3.

In order to describe the present invention in more detail, the detection resistor R and the diode element D are arranged in the computer switch cable 1, please refer to FIG. 3, FIG. 4A, FIG. 4B, FIG. 4C, and FIG. 5, In the multi-connector integrated computer switch cable 1, the second ground terminal 115 of the first video connector 11 serves as a level detection terminal, and the second unconnected terminal 113 serves as a voltage supply terminals for providing voltage to the first PS/2 voltage terminal 153 and the USB voltage terminal 183 . Wherein, when the USB connector 18 is connected to the USB connection port 34 of the computer 3, the second ground terminal 115 will detect a high-level signal through the detection resistor R, so that the computer 3 can Identify the connector connected to its USB connection port 34 as a USB connector; at this time, the computer 3 sends a keyboard input/output data to the main cable through the USB negative data terminal 181 and the USB positive data terminal 182 13, and then transmit the keyboard input/output data to the computer switch 2 through the first video connector 11.

And, when this second PS/2 connector 17 is connected to this second PS/2 connection port 33 of this computer 3, computer 3 can pass this second PS/2 data terminal of second PS/2 connector 17 171 transmits the mouse input/output data to the main cable 13 , and then transmits the mouse input/output data to the computer switch 2 through the first video connector 11 . In the aforementioned situation, the second PS/2 connector 17 has been connected to the computer 3; 32, the second ground terminal 115 cannot detect the high-level signal through the detection resistor R, so that the computer 3 can recognize that the connector connected to the first PS/2 connection port 32 is a PS /2 connector, at this moment, the computer 3 can transmit the keyboard input/output data to the main cable 13 through the first PS/2 data terminal 151 of the first PS/2 connector 15, so as to pass the first PS/2 connector 15 to the main cable 13. A video connector 11 transmits keyboard input/output data to the computer switch 2 .

Thus, the above description has fully disclosed the components and functions of the multi-connector integrated computer switch cable of the present invention, and, through the above, it can be known that the present invention has the following advantages:

1. The present invention integrates two PS/2 connectors and one USB connector into the same computer switch cable, which can facilitate users to selectively connect a PS/2 interface mouse and a PS/2 interface keyboard to the computer, or connect a keyboard/mouse with a USB interface to the computer, and then control two or more computer hosts at the same time through the computer switcher.

2. The present invention utilizes the unused pin terminal, the ground pin terminal and the unconnected pin terminal of the first video connector, and at the same time, by arranging the detection resistor and the diode element in the USB connector, In this way, by detecting the high-level signal through the level detection terminal of the first video connector, the computer can further identify that the connector currently connected to the computer connection port is a PS/2 interface connector or a USB interface connector .

3. According to the above-mentioned point 2, no matter whether the first video connector and the second video connector are a VGA connector, a DVI connector or an HDMI connector, the first video connector can use the unused pin terminal, the ground pin terminal and the unconnected pin terminal, and by setting the detection resistor and the diode element in the USB connector to detect the level of the first video connector The detection terminal detects the high-level signal, so that the computer can recognize that the connector currently connected to the computer connection port is a PS/2 interface connector or a USB interface connector.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solutions of the present invention.

Claims (10)

1. A multi-connector integrated computer switcher cable, characterized in that it comprises: A first video connector, used to connect a video connection port of a computer switcher; a second video connector, used to connect a video connection port of a computer; a main cable connecting the first video connector and the second video connector to transmit signals between the first video connector and the second video connector; A first branch cable, one end of which is extended from the main cable and connected to the second video connector; A first PS/2 connector, connected to the other end of the first branch cable, and used to connect to a first PS/2 connection port of the computer; A second branch cable, one end of which is extended from the main cable and connected to the second video connector; a second PS/2 connector, connected to the other end of the second branch cable, and used to connect to a second PS/2 connection port of the computer; and At least one USB connector is connected to the second video connector through at least one third branch cable, and the third branch cable is extended from the main cable, and the USB connector is used to connect to a USB connection of a computer port; Wherein, through the first branch cable, a first unused terminal, a first unconnected terminal, a second unconnected terminal, and a first grounding terminal of the first video connector are electrically connected to the a first PS/2 data terminal, a first PS/2 clock terminal, a first PS/2 voltage terminal, and a first PS/2 ground terminal of the first PS/2 connector; and, by From the first branch cable, the first video connector and the third branch cable, the first PS/2 data terminal, the first PS/2 clock terminal, the first PS/2 voltage terminal, and the The first PS/2 ground terminal is electrically connected to a USB negative data terminal, a USB positive data terminal, a USB voltage terminal, and a USB ground terminal of the USB connector, respectively; Wherein, a diode element is provided between the first PS/2 voltage terminal and the USB voltage terminal; and one end of a detection resistor is coupled to the diode element and the USB voltage terminal at the same time, and the other end of the detection resistor is electrically Connected to a second ground terminal of the first video connector. 2. The multi-connector integrated computer switch cable according to claim 1, wherein the first video connector is any one of the following: a VGA connector, a DVI connector and an HDMI connector. 3. The multi-connector integrated computer switch cable according to claim 1, wherein the second video connector is any one of the following: a VGA connector, a DVI connector and an HDMI connector. 4. The multi-connector integrated computer switch cable according to claim 1, wherein said first PS/2 connector is used to transmit a keyboard input/output data. 5. The multi-connector integrated computer switch cable according to claim 1, wherein said second PS/2 connector is used to transmit a mouse input/output data. 6. The multi-connector integrated computer switch cable according to claim 1, wherein said USB connector is used to transmit any of the following data: keyboard input/output data and mouse input/output data. 7. The multi-connector integrated computer switch cable according to claim 1, wherein the second ground terminal serves as a level detection terminal. 8. The multi-connector integrated computer switch cable according to claim 7, wherein when the USB connector is connected to the USB port of the computer, the second ground terminal will pass through the detection The resistor detects a high level signal. 9. The multi-connector integrated computer switch cable according to claim 8, wherein when the second PS/2 connector and the first PS/2 connector are connected to the second PS of the computer When the /2 connection port is connected to the first PS/2 connection port, the second ground terminal cannot detect the high level signal through the detection resistor. 10. The multi-connector integrated computer switch cable according to claim 8, wherein said second unconnected terminal serves as a voltage supply terminal for providing voltage to the first PS/2 voltage terminal and the USB voltage terminal.

Images