Dell OptiPlex GX520 - Manual (Page 106)

devices per channel with one channel
Expansion Bus
Bus type PCI 2.3
SATA 1.0a and 2.0
USB 2.0
PCI Express 1.0a
Bus speed PCI: 33 MHz
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps
PCI Express x1: 5 Gbps
Cards: full-height cards supported
PCI:
connectors two
connector size 120 pins
connector data width
(maximum)
32 bits
PCI Express:
connectors one x1
power 10 W maximum
connector size 36 pins
connector data width (maximum) one PCI Express lane
Drives
Externally accessible one 3.5-inch drive
two 5.25-inch drive bays
Internally accessible two bays for 1-inch-high hard drives
Connectors
External connectors:
Serial 9-pin connector; 16550C-compatible
Parallel 25-hole connector (bidirectional)
Video 15-hole VGA connector
Network adapter RJ45 connector
Optional PS/2 with secondary serial port
adapter two 6-pin mini-DINs
USB two front-panel and six back-panel USB 2.0–
compliant connectors
Audio three connectors for line-in, line-out, and microphone;
two front-panel connectors for headphones and
microphone
System board connectors:
Primary IDE drive 40-pin connector
Serial ATA four 7-pin connectors
Floppy drive 34-pin connector
Serial 12-pin connector for optional second serial port card
Fan 5-pin connector
PCI 2.2 120-pin connector
CD drive audio interface 4-pin connector
Front panel 40-pin connector
Key Combinations
<Ctrl><Alt><Del> in Microsoft® Windows® XP, brings up the Windows
Security window.; in MS-DOS® mode, restarts
(reboots) the computer
<F2> or <Ctrl><Alt><Enter> starts embedded system setup (during system start-
up only)
<Ctrl><Alt><b> 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