Dell OptiPlex 740 User's Guide - Page 35
Controls and Lights, Power, Key Combinations, V at 50/60 Hz - power supply
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Key Combinations or displays a boot device menu that allows the user to enter a device for a single boot (during start-up only) as well as options to run hard-drive and system diagnostics starts the RAID setup menu if RAID is turned on in the system setup program disables computer password at start-up (after correct password is entered) Controls and Lights Power control front of chassis - push button Power light (within the power button) green light - Blinking green indicates sleep mode; solid green indicates 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 (on front panel) 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 305 W 1040.7 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 Mini Tower Computer 35