About Your Computer 39PCI Express x8 wired as x4(SLOT1_PCIE)connectors one x8 (supports x8, x4, and x1 modes/cards;maximum x4 link width)connector size 98 pinsconnector data width (maximum) 4 PCI Express lanesbus transfer rate 2.5 GB/s/lane/direction (raw bandwidth)PCI Express 2.0 x16connector two x16 slots (support x16, x8, x4 and x1modes/cards)connector size 164 pinsconnector data width (maximum) 16 PCI Express lanesbus transfer rate 5 GB/s/lane/direction (raw bandwidth)Ports and ConnectorsExternal connectorsSerial two 9-pin connectors; 16550C-compatibleParallel 25-hole connector (bidirectional)IEEE 1394 (optional) one front-panel 6-pin connector and onerear panel 6-pin connectorNetwork adapter RJ45 connectorPS/2 (keyboard and mouse) two 6-pin mini-DINUSB two front-panel and five back-panel USB2.0–compliant connectorsAudio two front-panel connectors for microphoneand headphones;two back-panel connectors for line-in andline-outSystem board connectorsFloppy drive 34-pin connectorExpansion
