Rear view
1
Security keyhole
2
TV-out connector
3
Serial connector
4
Parallel connector
5
External-monitor connector
6
Modem connector
7
Ethernet connector
8
Power jack
9
Universal serial bus (USB) connector
Note: T23 series have two USB connectors.
10
External-input-device connector
1
2
3
4
ThinkPad T20, T21, T22 and T23 series
5
6
7
Locations
8
9
10
141