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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
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