Texas Instruments TM5000 Series User Manual page 46

Using Connectors and Ports
10 PS/2
11 MIC
2-22
Connects to an external PS/2 keyboard,
PS/2 Numeric Keypad, or a PS/2 mouse
may be connected to this port. If you are
connecting a 101-type keyboard, a 101 to
PS/2 keyboard adapter must be purchased.
Connects to external microphone. (Not
available with TM5020SE models.)