yellow light — A good connection exists between a 1-GB (1000-Mbps) network and the computer.off (no light) — The computer is not detecting aphysical connection to the network.Activity light (on integrated network adapter) yellow blinking light when there is activity on thenetwork; if there is not any network activity, the lightwill be offDiagnostic lights four lights on the front panel (see Diagnostic Lights)Standby power light AUXPWR on the system boardfront panel LEDs eight multi-colored LEDs provide illumination for thefront of the computerNOTE: The color of the front panel LEDs can beadjusted in system setup (see System Setup).back panel LEDs two multi-colored lights provide illumination for theI/O panel on the back of the computerNOTE: The color of the back panel LEDs can beadjusted in system setup (see System Setup).PowerDC power supply: CAUTION: To reduce the risk of fire, electric shock,or injury, do not overload an electrical outlet,power strip, or convenience receptacle. The totalampere rating of all products plugged into anelectrical outlet, power strip, or other receptacleshould not not exceed 80 percent of the branchcircuit rating.Wattage 750 W or1 KWHeat dissipation 750 W: 1150 BTU/hr or1 KW: 1075 BTU/hourVoltage (see the safety instructions located inthe Product Information Guide for importantvoltage setting information)auto-sensing power supply—90 V to 265 V at 50/60HzBackup battery 3-V CR2032 lithium coin cellPhysical lHeightWithout stand 55.5 cm (21.9 inches)With stand 57.2 cm (22.5 inches)WidthWithout stand 21.9 cm (8.6 inches)With stand 35.6 cm (14.0 inches)Depth 59.4 cm (23.4 inches)WeightTypical configuration 21.7 kg (47.8 lb)Maximum configuration 25.6 kg (56.4 lb)EnvironmentalTemperature:Operating 10° to 35°C (50° to 95°F)Storage –40° to 65°C (–40° to 149°F)Relative humidity 20% to 80% (noncondensing)Maximum vibration:Operating 0.25 G at 3 to 200 Hz at 0.5 octave/minStorage 0.5 G at 3 to 200 Hz at 1 octave/minMaximum shock:Operating bottom half-sine pulse with a change in velocity of 20inches/sec (50.8 cm/sec)