Dell OptiPlex GX620 - Manual (Page 171)

Drives one serial ATA controller supporting one device and
one parallel Ultra ATA/100 IDE supporting two
devices per channel with one channel
Expansion Bus
Bus type PCI 2.2
SATA 1.0a and 2.0
USB 2.0
PCI Express 1.0a
Bus speed PCI: 33 MHz
SATA: 1.5 and 3.0 Gbps
USB: 480 Mbps
PCI Express x16: 80 Gbps
Cards: low-profile cards supported
PCI:
connector one
connector size 120 pins
connector data width (maximum) 32 bits
PCI Express:
connector one x16
power 25 W (maximum)
connector size 164 pins
connector data width (maximum) 16 PCI Express lanes
Drives
Externally accessible one bay for a slimline floppy drive;
one bay for a slimline CD/DVD drive
Internally accessible one bay for a 1-inch-high hard drive
Connectors
External connectors:
Serial 9-pin connector; 16550C-compatible
Parallel 25-hole connector (bidirectional)
Video 15-hole VGA connector
Network adapter RJ45 connector
USB two front-panel and six back-panel USB 2.0–
compliant connectors
Audio three connectors for line-in, line-out, and microphone;
one front-panel connector for headphones
System board connectors:
Primary IDE drive 40-pin connector
Serial ATA 7-pin connector
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
in Microsoft® Windows® XP, brings up the Windows
Security window; in MS-DOS® mode, restarts
(reboots) the computer
or 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)
or displays a boot device menu that allows the user to
enter a device for a single boot (during system start-