PS/2 Port
| Pin No. | Signal Name |
| 1 | Data |
| 2 | Reserved |
| 3 | Ground |
| 4 | +5 Volts |
| 5 | Clock |
| 6 | Reserved |
Data
Mouse data packets or keyboard scan codes are sent from the mouse or keyboard to the computer on this single wire serially.
Clock
This signal is sent from the mouse or keyboard to synchronize the data signal.
+5 Vdc
This is a simple 5 volts signal for giving power to the mouse or keyboard.
Ground
This is a common ground signal used as a return path for data and is a reference to logical 0.
