Dell XPS/Dimension XPS Gen 5 - Manual (Page 124)

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Appendix
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Expansion Bus
Bus type PCI 32-bit
PCI Express x1, x4, and x16
Bus speed
Bus throughput
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
PCI
connector three
connector size 120 pins
connector data width (maximum) 32 bits
PCI Express
connector one x1
connector size 36 pins
connector data width (maximum) 1 PCI Express lane
PCI Express
connector one x4
connector size 98 pins
connector data width (maximum) 4 PCI Express lanes
PCI Express
connector one x16
connector size 164 pins
connector data width (maximum) 16 PCI Express lanes
Drives
Externally accessible: one 3.5-inch drive bays
three 5.25-inch drive bays
Available devices Serial ATA drive, floppy drive, memory devices, CD drive, CD-RW
drive, DVD drive, DVD-RW drive, and DVD and CD-RW combo
drive
Internally accessible: three bays for 1-inch high hard drives
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