11 
1  Product Description 
What This Chapter Contains 
1.1  Overview ......................................................................................... 12 
1.2  Online Support ................................................................................. 17 
1.3  Processor ........................................................................................ 17 
1.4  System Memory ............................................................................... 18 
1.5  Intel
®
 975X Chipset .......................................................................... 24 
1.6  Discrete Serial ATA Interface (Optional) .............................................. 27 
1.7  PCI Express Connectors..................................................................... 28 
1.8  IEEE-1394a Connectors (Optional)...................................................... 29 
1.9  Legacy I/O Controller ........................................................................ 29 
1.10 Audio Subsystem.............................................................................. 31 
1.11 LAN Subsystem ................................................................................ 34 
1.12 Hardware Management Subsystem ..................................................... 37 
1.13 Power Management .......................................................................... 39 
1.14 Onboard Power Button ...................................................................... 46 
1.15 Onboard LEDs .................................................................................. 47 
1.16 Trusted Platform Module (Optional)..................................................... 48