Dell OptiPlex GX520 User Manual page 183

Expansion Bus
Bus type
Bus speed
Cards:
PCI:
connector
connector size
connector data width (maximum)
Drives
Externally accessible
Internally accessible
Connectors
External connectors:
Serial
Parallel
Video
Network adapter
USB
Audio
System board connectors:
Primary IDE drive
Serial ATA
Floppy drive
Serial
Fan
PCI 2.2
CD drive audio interface
Front panel
Key Combinations
<Ctrl><Alt><Del>
<F2> or <Ctrl><Alt><Enter>
<Ctrl><Alt><b>
<F12> or <Ctrl><Alt><F8>
Controls and Lights
Power control
Power light
PCI 2.2
SATA 1.0a and 2.0
USB 2.0
PCI: 33 MHz
SATA: 1.5 and 3.0 Gbps
USB: 480 Mbps
low-profile cards supported
one
120 pins
32 bits
one bay for a slimline floppy drive;
one bay for a slimline CD/DVD drive
one bay for a 1-inch-high hard drive
9-pin connector; 16550C-compatible
25-hole connector (bidirectional)
15-hole VGA connector
RJ45 connector
two front-panel and six back-panel USB 2.0–
compliant connectors
three connectors for line-in, line-out, and microphone;
one front-panel connector for headphones
40-pin connector
7-pin connector
34-pin connector
12-pin connector for optional second serial port card
5-pin connector
120-pin connector
4-pin connector
40-pin connector
in Microsoft® Windows® XP, brings up the Windows
Security window; in MS-DOS® mode, restarts
(reboots) the computer
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 sleep mode;
solid green indicates power-on state.