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The PS/2 socket is a small DIN construction about 1cm in diameter. It has a 'keying' hole and 6 pins in a semi circle numbered clockwise looking at the socket.
| Pin | Function |
|---|
| 5 | CLK |
|---|
| 3 | GND |
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| 1 | Data |
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| 2 | Not connected |
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| 4 | +5V |
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| 6 | Not condected |
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GA-586HX motherboard
The motherboard socket is a 1x4 push on
| PS/2 pin | Wire Colour | Socket Pin |
|---|
| 4 | red | 1 |
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| 1 | orange | 2 |
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| 3 | black | 3 |
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| 5 | yellow | 4 |
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Mainboard 571 Txpro
The motherboard socket is a 2x4 push on with no pin 3
| PS/2 pin | Wire Colour | Socket Pin |
|---|
| 4 | yellow | 8 |
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| 1 | brown | 4 |
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| 3 | red | 2 |
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| 5 | green | 1 |
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Alternate Mainboard 571 Txpro
J7 is an 2x9 ATX form card connector that has provision for a PS/2 mouse
| J7 pin | Function |
|---|
| 5 | +5 VDC |
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| 6 | Mouse CLK |
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| 15 | Mouse Data |
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| 16 | Ground |
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After bad luck I have discovered it is possible to blowup a PS/2 mouse such that it will not work in a PS/2 socket yet it will work in a COM port socket. Beware of strange serial port behaviour though.
Com port assignations
| Port | I/O Address | Default IRQ |
| COM1 | 3F8-3FF | 4 |
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| COM2 | 2F8-2FF | 3 |
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| COM3 | 3E8-3EF | 4 |
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| COM4 | 2E8-2EF | 3 |
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