Dell XPS /Dimension Gen 5 Owner's Manual page 124

Expansion Bus
Bus type
Bus speed
Bus throughput
PCI
connector
connector size
connector data width (maximum)
PCI Express
connector
connector size
connector data width (maximum)
PCI Express
connector
connector size
connector data width (maximum)
PCI Express
connector
connector size
connector data width (maximum)
Drives
Externally accessible:
Available devices
Internally accessible:
124
Appendix
PCI 32-bit
PCI Express x1, x4, and x16
PCI: 33 MHz
PCI Express: 2.5 Gb/s raw bandwidth (bidirectional) per lane
PCI Express:
x1 slot bidirectional speed — 500 MB/s
x4 slot bidirectional speed — 2 GB/s
x16 slot bidirectional speed — 8 GB/s
three
120 pins
32 bits
one x1
36 pins
1 PCI Express lane
one x4
98 pins
4 PCI Express lanes
one x16
164 pins
16 PCI Express lanes
one 3.5-inch drive bays
three 5.25-inch drive bays
Serial ATA drive, floppy drive, memory devices, CD drive, CD-RW
drive, DVD drive, DVD-RW drive, and DVD and CD-RW combo
drive
three bays for 1-inch high hard drives