Dell OptiPlex 790 Owner's Manual

Also see for OptiPlex 790: Service manual Setup and features information Specifications Important information Technical guidebook

Contents

Controls and LightsOrange — 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.Power supply diagnostic light Green light — The power supply is turned onand is functional. The power cable must beconnected to the power connector (at theback of the computer) and the electricaloutlet.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 LEDlights up. If the LED does not light up, the power supply may be defective. ACpower must be connected during this test.PowerWattage MaximumHeatDissipationVoltageMini-Tower 265 W 1390 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 5.0 ADesktop 250 W 1312 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.4 ASmall FormFactor240 W 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 AUltra SmallForm Factor200 W 758 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 2.9 ANOTE: Heat dissipation is calculated by using the power supply wattage rating.91