Dell Dimension 3100 Owner's Manual page 102

Video
Type
Audio
Type
Expansion Bus
Bus type
Bus speed
PCI
connectors
connector size
connector data width (maximum)
PCI Express
connector
connector size
connector data width (maximum)
Drives
Externally accessible:
Available devices
Internally accessible
100
Appendix
Integrated
HDA 2
PCI 2.3
PCI Express x1
PCI: 33 MHz
PCI Express: 500 MB/s bidirectional speed
two
120 pins
32 bits
one x1
36 pins
1 PCI Express lane
one 3.5-inch drive bay (FlexBay)
two 5.25-inch drive bays
Serial ATA drives (up to 2), floppy drive, USB memory devices, CD
drive, CD-RW drive, DVD drive, DVD-RW drive, DVD and
CD-RW combo drive, and media reader
two bays for 1-inch high hard drives