Texas Instruments TM5000 Series - Manual (Page 46)

10 PS/2 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.
11 MIC Connects to external microphone. (Not
available with TM5020SE models.)
Using Connectors and Ports
2-22