IBM 6648 - Manual (Page 152)

Input/Output connectors - Types 6058/6059/6578/6579
1
2
1 Power connector 7 Audio in connector
2 Mouse 8 Microphone connector
3 USB connector 2 9 Monitor connector
4 Parallel connector 10 Serial connector 1
5 Serial connector 2 (joystick/MIDI connector in
some models)
11 USB connector 1
6 Audio out connector 12 Keyboard connector
138
Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648,
6649