Product Description 
 13 
Table 1.  Feature Summary (continued) 
Expansion 
Capabilities 
•  Two PCI* Conventional bus add-in card connectors (SMBus routed to both PCI 
Conventional bus add-in card connectors) 
•  One Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector 
•  One Secondary PCI Express x16 (electrical x8) bus add-in card connector 
•  One PCI Express x16 (electrical x4) bus add-in card connector  
Hardware Monitor 
Subsystem 
•  Hardware monitoring and fan control ASIC  
•  Voltage sense to detect out of range power supply voltages 
•  Thermal sense to detect out of range thermal values  
•  Three fan headers 
•  Three fan sense inputs used to monitor fan activity 
•  Fan speed control 
•  Support for Product Environmental Control Interface (PECI) 
1.1.2  Manufacturing Options 
Table 2 describes the manufacturing options.  Not every manufacturing option is 
available in all marketing channels.  Please contact your Intel representative to 
determine which manufacturing options are available to you. 
Table 2.  Manufacturing Options 
AMT 
BIOS support for Intel
®
 Active Management Technology (Intel
®
 AMT) 
ATAPI CD-ROM 
Connector 
A 1 x 4-pin ATAPI-style connector for connecting an internal ATAPI CD-ROM drive 
to the audio mixer 
Audio Subsystem  Intel High Definition Audio subsystem in one of the following configurations: 
•  8-channel (7.1) audio subsystem with five analog audio outputs and two S/PDIF 
digital audio outputs (coaxial and optical) using the SigmaTel* 9274D audio 
codec 
•  6-channel (5.1) audio subsystem with three analog audio outputs using the 
Sigmatel 9227 audio codec 
Auxiliary PCI 
Express Graphics 
Power Connector 
Provides required additional power when using high power (75 W or greater) add-in 
cards in either or both the Secondary PCI Express x16 (electrical x8) and the PCI 
Express x16 (electrical x4) bus add-in card connectors 
Discrete SATA 
RAID Controller 
•  Marvell* 88SE6145 SATA RAID controller 
•  Four SATA connectors (in addition to the four SATA connectors on the 
ICH7-R/ICH7-DH SATA interface) 
IEEE-1394a 
Interface 
IEEE-1394a controller and two IEEE-1394a connectors:  one back panel connector 
and one front-panel header 
MCH Fan Header 
A 3-pin header for powering a fan for the Intel
®
 
82975X Memory Controller Hub 
(MCH) 
Processor Core 
Power Connector 
One of the following connectors for providing +12 V power to the processor voltage 
regulator: 
•  2 x 4-pin (requires a power supply with a dual-rail 2 x 4 power cable).  Boards 
equipped with the 2 x 4-pin processor core power connector will also include 
heatsinks in the processor voltage regulator area. 
•  2 x 2-pin 
SCSI Hard Drive 
LED Header 
Allows add-in hard drive controllers (SCSI or other) to use the same LED as the 
onboard IDE controller 
Trusted Platform 
Module (TPM) 
A component that enhances platform security