Lenovo ThinkCentre E51 Hardware Maintenance Manual - Page 90
Rear connectors, The following illustration shows the locations of the connectors on the rear of
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Rear connectors The following illustration shows the locations of the connectors on the rear of the computer. 1 Power connector 2 Voltage selection switch (some models) 3 Mouse connector 4 Keyboard connector 5 Serial connector 6 Parallel connector 7 VGA monitor connector 8 USB connectors 9 Ethernet connector 10 USB connectors 11 Microphone connector 12 Audio line out connector 13 Audio line in connector 14 AGP or PCI Express x16 graphics connector (some models) 15 PCI adapter slots 84 Hardware Maintenance Manual
![](/manual_guide/products/lenovo-thinkcentre-e50-hardware-maintenance-manual-59d0e2f/90.png)
Rear connectors
The following illustration shows the locations of the connectors on the rear of the
computer.
±1²
Power connector
±9²
Ethernet connector
±2²
Voltage selection switch (some models)
±10²
USB connectors
±3²
Mouse connector
±11²
Microphone connector
±4²
Keyboard connector
±12²
Audio line out connector
±5²
Serial connector
±13²
Audio line in connector
±6²
Parallel connector
±14²
AGP or PCI Express x16 graphics
connector (some models)
±7²
VGA monitor connector
±15²
PCI adapter slots
±8²
USB connectors
84
Hardware Maintenance Manual