Dell OptiPlex 780 Service Manual - Page 10

Power, Physical, W non-EPA or 255 W EPA - diagnostic lights

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Diagnostic lights Back of the computer Link integrity light on integrated network adapter four lights. For more information, see Diagnostics. green - a good 10 Mbps connection exists between the network and the computer. 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. Network activity light on integrated yellow light - A blinking yellow light network adapter indicates that network activity is present. Power DC power supply Wattage Mini-tower 305 W (non-EPA) or 255 W (EPA) Desktop 255 W (EPA) Small form factor 235 W (EPA) Maximum heat dissipation Mini-tower 1041 BTU/hr Desktop 955 BTU/hr Small form factor 938 BTU/hr Voltage 90-265 VAC, 50/60 Hz Coin-cell battery 3 V CR2032 lithium coin cell NOTE: Heat dissipation is calculated by using the power supply wattage rating. NOTE: See the safety information that shipped with your computer for important voltage setting information. Physical Height Mini-tower Desktop Small form factor Width Mini-tower Desktop Small form factor Depth 40.80 cm (16.10 inches) 11.40 cm (4.50 inches) 9.26 cm (3.65 inches) 18.70 cm (7.40 inches) 39.90 cm (15.70 inches) 31.40 cm (12.40 inches)

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Diagnostic lights
four lights. For more information, see
Diagnostics.
Back of the computer
Link integrity light on integrated
network adapter
green — a good 10 Mbps connection
exists between the network and the
computer.
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.
Network activity light on integrated
network adapter
yellow light — A blinking yellow light
indicates that network activity is present.
Power
DC power supply
Wattage
Mini-tower
Desktop
Small form factor
305 W (non-EPA) or 255 W (EPA)
255 W (EPA)
235 W (EPA)
Maximum heat dissipation
Mini-tower
Desktop
Small form factor
1041 BTU/hr
955 BTU/hr
938 BTU/hr
Voltage
90–265 VAC, 50/60 Hz
Coin-cell battery
3 V CR2032 lithium coin cell
NOTE:
Heat dissipation is calculated by using the power supply wattage rating.
NOTE:
See the safety information that shipped with your computer for important
voltage setting information.
Physical
Height
Mini-tower
Desktop
Small form factor
40.80 cm (16.10 inches)
11.40 cm (4.50 inches)
9.26 cm (3.65 inches)
Width
Mini-tower
Desktop
Small form factor
18.70 cm (7.40 inches)
39.90 cm (15.70 inches)
31.40 cm (12.40 inches)
Depth