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About Your Computer 31
connector
two x16 slots (support x16, x8, x4 and x1
modes/cards)
connector size
164 pins
connector data width (maximum)
16 PCI Express lanes
bus transfer rate
5.0 GB/s/lane/direction (raw bandwidth)
Ports and Connectors
External connectors:
Serial
two 9-pin connectors; 16550C-compatible
Parallel
25-hole connector (bidirectional)
IEEE 1394
one front-panel, 6-pin connector and one
rear panel, 6-pin connector
Network adapter
RJ45 connector
PS/2 (keyboard and mouse)
two 6-pin mini-DIN
USB
two front-panel and five back-panel USB
2.0–compliant connectors
Audio
two front-panel connectors for microphone
and headphones;
two back-panel connectors for line-in and
line-out
System board connectors:
Floppy drive
34-pin connector
SAS/Serial ATA HDD
four 7-pin connectors
Serial ATA
three 7-pin connectors
Internal USB
one 10-pin connector for optional Media
Card Reader (3.5-inch bay device or secure
boot device)
Video
Video type PCI Express 2.0 x16 (two slots)
Expansion