| motherboard Pin | Pin Name |
Description |
| 1 | clock | mouse clock |
| 2 | Vss | ground |
| 3 | nc | no connection |
| 4 | data | mouse data |
| 5 | nc | no connection |
| 6 | nc | no connection |
| 7 | nc | no connection |
| 8 | Vcc | +5vdc |
according to the data obtained from major source motherboard blogs (http://www.motherboard.cz/) on the El Pina / M-Compa / M571 main board...this is the correct pinout for connecting a PS/2 mouse w/ an adaptor.

