Computer Hardware User's Manual

1 Product Description

What This Chapter Contains

1.1 PCI Bus Terminology Change...................................................................................... 11

1.2 Board Differences ........................................................................................................ 11

1.3 Overview ...................................................................................................................... 12

1.4 Online Support ............................................................................................................. 19

1.5 Processor ..................................................................................................................... 19

1.6 System Memory ........................................................................................................... 20

1.7 Intel

925X Chipset...................................................................................................... 25

1.8 PCI Express Connectors.............................................................................................. 28

1.9 Auxiliary Power (AUX PWR) Output Connector........................................................... 28

1.10 I/O Controller................................................................................................................ 29

1.11 Audio Subsystem ......................................................................................................... 31

1.12 LAN Subsystem ........................................................................................................... 35

1.13 Hardware Management Subsystem............................................................................. 37

1.14 Power Management ..................................................................................................... 40

1.1 PCI Bus Terminology Change

Previous generations of Intel

Desktop Boards used an add-in card connector referred to as PCI.

This generation of Intel Desktop Boards adds a new technology for add-in cards: PCI Express*.

The 32-bit parallel bus previously referred to as PCI is now called PCI Conventional.

1.2 Board Differences

This TPS describes these Intel Desktop Boards: D925XCV and D925XBC. The Desktop Boards

are identical with the exception of the items listed in Table 1.

Table 1. Summary of Board Differences

D925XCV

• ATX Form Factor (10.20 inches by 9.60 inches [259.08 millimeters by

243.84 millimeters])

• Four PCI Conventional bus add-in card connectors

• Two PCI Express x1 bus add-in card connectors

• Auxiliary rear fan connector

• Option for auxiliary power output connector

• Option for SCSI hard drive indicator LED

• Option for Trusted Platform Module (TPM)

D925XBC

• microATX Form Factor (9.60 inches by 9.60 inches [243.84 millimeters by

243.84 millimeters])

• Two PCI Conventional bus add-in card connectors

• One PCI Express x1 bus add-in card connector