Setup configuration

Introduction

The Intel Skulltrail is the ultimate enthusiast platform, the platform differs from your traditional enthusiast systems by offering support for two 3.2 Gig QX9775 LGA771 processors, the D5400XS is a full sized EATX motherboard that has four PCI-E x16 slots, FB-DIMM memory technology, Multi GPU 2.0 compatible x16 slots all of which operate with 16 lanes of bandwidth and support both Crossfire and SLI.

Spec

• CPU support Dual LGA771-based Core 2 Extreme and Xeon processors 
• North bridge Intel 5400 MCH 
• South bridge Intel 6321ESB ICH 
• Interconnect PCIe x4 + DMI x4 
• Expansion slots 4 PCI Express x16 (PCIe 1.1) via dual Nvidia nForce 100 switches 2 32-bit PCI 
• Memory 4 240-pin FB-DIMM sockets Maximum of 16GB of DDR2-667/800 FB-DIMM memory 
• Storage I/O 1 ATA/100 port 6 Serial ATA 3Gbps ports with RAID 0, 1, 5, 10 support 
• Audio 8-channel HD audio via 6321ESB and SigmaTel STAC9274D5 codec 

Ports and Headers 

• 2 eSATA with RAID 0,1 support via Marvell 88SE6121
• 6 USB 2.0 with headers for 4 more
• 1 RJ45 Ethernet 10/100/1000 via Intel 82573L
• 1 IEEE1394 (FireWire) with header for 1 more via TI TSB43AB22A

• 1 analog front out
• 1 analog center/LFE out
• 1 analog rear out
• 1 analog surround out/line in
• 1 analog mic in
• 1 TOS-Link digital S/PDIF out 
• 1 HD Audio front-panel header for analog headphone out and mic in
• 1 HD Audio Link header
• 1 3-pin S/PDIF out header

• 1 Consumer Infrared front-panel receiver header
• 1 Consumer Infrared transmitter header

Form factor EATX (13″ x 12″) with LGA775-style mounting holes for cooling 

Skulltrails Layout

CPU’s LGA771 package QX9775