Dell OptiPlex 780 Service Manual

Also see for OptiPlex 780: Setup and Features Information Tech Sheet Setting up User guide Technical guidebook Setup & features

Diagnostic lights four lights. For more information, seeDiagnostics.Back of the computerLink integrity light on integratednetwork adaptergreen — a good 10 Mbps connectionexists between the network and thecomputer.orange — a good 100 Mbps connectionexists between the network and thecomputer.yellow — a good 1000 Mbps connectionexists between the network and thecomputer.off (no light) — the computer is notdetecting a physical connection to thenetwork.Network activity light on integratednetwork adapteryellow light — A blinking yellow lightindicates that network activity is present.PowerDC power supplyWattageMini-towerDesktopSmall form factor305 W (non-EPA) or 255 W (EPA)255 W (EPA)235 W (EPA)Maximum heat dissipationMini-towerDesktopSmall form factor1041 BTU/hr955 BTU/hr938 BTU/hrVoltage 90–265 VAC, 50/60 HzCoin-cell battery 3 V CR2032 lithium coin cellNOTE: Heat dissipation is calculated by using the power supply wattage rating.NOTE: See the safety information that shipped with your computer for importantvoltage setting information.PhysicalHeightMini-towerDesktopSmall form factor40.80 cm (16.10 inches)11.40 cm (4.50 inches)9.26 cm (3.65 inches)WidthMini-towerDesktopSmall form factor18.70 cm (7.40 inches)39.90 cm (15.70 inches)31.40 cm (12.40 inches)Depth