Lenovo ThinkCentre M57e - Manual (Page 31)

3. Connect the mouse cable to the appropriate mouse connector, either the
standard mouse connector 1 or the USB connector 2 .
4. Connect the monitor cable to the monitor connector on the computer.
v If you have a Video Graphics Array (VGA) standard monitor, connect
the cable to the connector as shown.
Note: If your model has two monitor connectors, be sure to use the
connector on the graphics adapter.
Chapter 3. Setting up your computer
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