Texas Instruments EXTENSA 570CD - Manual (Page 26)

To install an external keyboard or external PS/2 mouse on the notebook,
use the following procedure:
1. Ensure that the notebook is powered off.
2. Locate the external PS/2 port at the rear of the notebook (refer to
Figure 2-2).
3. Attach the PS/2 cable from your mouse and/or keyboard cable to the
PS/2 port.
4. Power on any other peripheral devices you may have connected to the
notebook, and then power up the notebook.
Figure 2-2 PS/2 Port Assignments/Pinouts
Installation 2-5