Dell OptiPlex 790 (Early 2011) - Manual (Page 10)

Drives
Small Form Factor one
Ultra Small Form Factor one
Control Lights And Diagnostic Lights
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. Blinking
amber light indicates a problem with the system
board.
Drive activity light Blue light — Blinking blue light indicates that the
computer is reading data from or writing data to
the hard drive.
Diagnostic lights Four lights located on the front panel of the
computer. For more information on the diagnostic
lights, see the
Service Manual at
support.dell.com/manuals.
Power
Coin-cell battery 3 V CR2032 lithium coin cell
Voltage
Mini-Tower 100 VAC to 240 VAC, 50 Hz to 60 Hz, 5.00 A
Desktop 100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.40 A
Small Form Factor 100 VAC to 240 VAC, 50 Hz to 60 Hz, 3.60 A
100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.00 A
Ultra Small Form Factor 100 VAC to 240 VAC, 50 Hz to 60 Hz, 2.90 A
Wattage
Mini-Tower 265 W
Desktop 250 W
10