Dell optiplex 790 mini-tower Owner's Manual page 93

Controls and Lights
Network activity light on integrated
network adapter
Power supply diagnostic light
NOTE: You can test the health of the power system by pressing the test button.
When the system power supply voltage is within specification, the self-test LED
lights up. If the LED does not light up, the power supply may be defective. AC
power must be connected during this test.
Power
Wattage
Mini-Tower 265 W
Desktop 250 W
Small Form 240 W
Factor
Ultra Small 200 W
Form Factor
NOTE: Heat dissipation is calculated by using the power supply wattage rating.
Orange — a good 100 Mbps connection
exists between the network and the
computer.
Yellow — a good 1000 Mbps connection
exists between the network and the
computer.
Off (no light) — the computer is not
detecting a physical connection to the
network.
Yellow light — A blinking yellow light
indicates that network activity is present.
Green light — The power supply is turned on
and is functional. The power cable must be
connected to the power connector (at the
back of the computer) and the electrical
outlet.
Maximum Voltage
Heat
Dissipation
1390 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 5.0 A
1312 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.4 A
1259 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 3.6 A;
100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.0 A
758 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 2.9 A
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