Dell OptiPlex 790 (Early 2011) - Manual (Page 96)

System Board Connectors
Mini-Tower, Desktop, Small Form
Factor four 240-pin connectors
Ultra Small Form Factor two 240-pin connectors
Internal USB
Mini-Tower, Desktop one 10-pin connector
Small Form Factor, Ultra Small Form
Factor none
System Fan one 5-pin connector
Front panel control
Mini-Tower, Desktop, Small Form
Factor one 34-pin connector
Ultra Small Form Factor one 20-pin connector
Desktop, Small Form Factor, Ultra
Small Form Factor two 2-pin connectors
Processor one 1155-pin connector
Processor Fan one 5-pin connector
Power connector
Mini-Tower, Desktop, Small Form
Factor one 34-pin connector
Ultra Small Form Factor none
Controls and Lights
Front of the computer:
Power button light Blue light — Solid blue light indicates
power-on state; blinking blue light indicates
sleep state of the computer.
Amber light — Solid amber light when the
computer does not start indicates a problem
with the system board or power supply.
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