Dell OptiPlex GX520 User Manual page 156

<F2> or <Ctrl><Alt><Enter>
<Ctrl><Alt><b>
<F12> or <Ctrl><Alt><F8>
Controls and Lights
Power control
Power light
Hard-drive access light
Link light
Link integrity light (on integrated network adapter)
Activity light (on integrated network adapter)
Diagnostic lights
Standby power light
Power
DC power supply:
Wattage
Heat dissipation
Voltage
Backup battery
Physical
Height
Width
Depth
Weight
Environmental
Temperature:
Operating
Storage
Relative humidity
Maximum vibration:
Operating
Storage
Maximum shock:
Operating
Storage
Altitude:
Operating
Storage
starts embedded system setup (during system start-
up only)
automatically starts the computer from the network
environment specified by the remote boot
environment (PXE) rather than from one of the
devices in the system setup Boot Sequence option
(during system start-up only)
displays a boot device menu that allows the user to
enter a device for a single boot (during system start-
up only) as well as options to run hard-drive and
system diagnostics
push button
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
green
solid green light indicates network connection
green light for 10-Mb operation; orange light for 100-
Mb operation; yellow light for a 1000-Mb (1-Gb)
operation
yellow blinking light
four lights on the back panel (see
AUX_PWR on the system board
220 W
751 BTU/hr
NOTE: Heat dissipation is calculated based upon the
power supply wattage rating.
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
11.4 cm (4.5 inches)
39.9 cm (15.7 inches)
35.3 cm (13.9 inches)
10.4 kg (23 lb)
10° to 35°C (50° to 95°F)
–40° to 65°C (–40° to 149°F)
20% to 80% (noncondensing)
0.25 G at 3 to 200 Hz at 0.5 octave/min
0.5 G at 3 to 200 Hz at 1 octave/min
bottom half-sine pulse with a change in velocity of
50.8 cm/sec (20 inches/sec)
27-G faired square wave with a velocity change of
508 cm/sec (200 inches/sec)
–15.2 to 3048 m (–50 to 10,000 ft)
–15.2 to 10,668 m (–50 to 35,000 ft)
Problems").
"Diagnostic Lights")