Dell OptiPlex GX520 - Manual (Page 155)

devices per channel with one channel
Expansion Bus
Bus type PCI 2.3
SATA 1.0a and 2.0
USB 2.0
Bus speed PCI: 33 MHz
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps
Cards half-length, full-height cards supported with optional
riser-card cage
Default: no riser-card cage: low-profile cards supported
PCI:
connectors two
card size low profile
connector size 120 pins
connector data width
(maximum)
32 bits
Optional: full-height PCI riser-card cage: low-profile and full-height cards supported
PCI:
connectors three
card size one low-profile card and two full-height cards
connector size 120 pins
connector data width
(maximum)
32 bits
Drives
Externally accessible one 3.5-inch drive
one bay for CD/DVD or optional second hard 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
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 two 7-pin connectors
Floppy drive 34-pin connector
Serial 12-pin connector for optional second serial port card
Fan 5-pin connector
PCI 2.3 120-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