Dell OptiPlex 740 User's Guide - Page 109
Power, Physical, Environmental, Controls and Lights - diagnostic lights 1 2 3
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Controls and Lights Power light green light. Blinking green indicates a sleep mode; solid green indicates a power-on state. amber light. Blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem (see "Power Problems" on page 321). Hard-drive access light front panel - green Link light front panel - solid green light indicates network connection Link integrity light (on integrated network adapter) rear panel - green light for 10-Mb operation; orange light for 100Mb operation; yellow light for a 1000-Mb (1-Gb) operation Activity light (on integrated network rear panel - yellow blinking light adapter) Diagnostic lights front panel - Four lights on the front panel. See "Diagnostic Lights" on page 330. Standby power light AUX_PWR on the system board Power DC power supply: Wattage Heat dissipation Voltage Backup battery 280 W 955.39 BTU/hr maximum manual selection power supplies - 90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz 3-V CR2032 lithium coin cell Physical Height Width Depth Weight 11.4 cm (4.5 inches) 39.9 cm (15.7 inches) 35.3 cm (13.9 inches) 10.4 kg (23 lb) Environmental Temperature: Operating Storage Relative humidity Maximum vibration: 10° to 35°C (50° to 95°F) -40° to 65°C (-40° to 149°F) 20% to 80% (noncondensing) Desktop Computer 109