Intel D925XBC Product Description, What This Chapter Contains, PCI Bus Terminology Change

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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