IBM 6341 - Manual (Page 32)

The following illustration shows the location of the connectors on the back of the
microtower model computer.
1 Mouse connector 8 Audio line out connector
2 Keyboard connector 9 Audio line in connector
3 Serial connector 10 Microphone connector
4 Parallel connector 11 Serial connector
5 Monitor connector 12 PCI slots
6 USB connectors 13 Power connector
7 Ethernet connector
Note: The connectors on the rear of the computer have color-coded icons to help
you to determine where to connect the cables on your computer.
24 Hardware Maintenance Manual