Dell OptiPlex GX280 - Manual (Page 18)

connector size 120 pins
connector data width
(maximum)
32 bits
PCI Express
connectors one x1 and one x16
connector size 36 pins (x1) and 120 pins (x16)
connector date width
(maximum)
one PCI Express lane (x1) and 16 PCI
Express lanes (x16)
Drives
Externally accessible:
Small Form-Factor computer one bay for a slimline floppy drive
one bay for a slimline CD/DVD drive
Small Desktop computer one 3.5-inch bay
one 5.25-inch bay
Desktop computer one 3.5-inch drive
one bay for CD/DVD or optional second
Hard Drive
Small Mini-Tower computer two 3.5-inch drive bays
two 5.25-inch drive bays
Mini-Tower computer one 3.5-inch drive bay
two 5.25-inch drive bays
Internally accessible:
Small Form-Factor computer one bay for a 1-inch-high hard drive
Small Desktop computer one bay for a 1-inch-high hard drive
Desktop computer one bay for a 1-inch-high hard drive
Small Mini-Tower computer two bays for 1-inch high hard drives
Mini-Tower computer 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 connector
Network adapter RJ45 connector
Optional PS/2 with secondary serial
port adapter
small form-factor computer: one 6-pin
mini-DIN with a Y-adapter
small desktop, small mini-tower, desktop,
and mini-tower: 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; one front-panel connector
for headphones
System board connectors: