Processor
 • µPGA 939-pin socket; supports AMD Athlon 64
     4000+, Athlon 64 FX, X2, and Socket 939
     Opteron 100 series processors
 • Up to 1 GHz Hyper-Transport link support
 • Single and Dual Core support

Chipset
 • nVIDIA nForce™ pro2200 (S2866A2NRF),
     support SLI technology
 • nVIDIA nForce4™ Ultra (S2866G3NR),
     don't support SLI technology
 • SMSC DME1737

Memory
 • Dual memory channels
 • Supports up to four DDR-400/333 DIMMs
 • Up to 4GB of unbuffered, ECC/Non-ECC memory

Expansion Slots
 • One x16 PCI Express connector (#6)
 • One x16 PCI Express connector (#4) support SLI
    technology for x8 PCIe signal (S2866A2NRF only)
 • One SO-DIMM socket for SLI card (#5)
 • Three 32-bit, 33MHz PCI v2.2 slots

Back Panel I/O Ports
 • Stacked PS/2 mouse and keyboard ports
 • COM1 connector; one 15-pin VGA port
 • Three audio jacks (S2866A2NRF)
 • Stacked two RJ45 ports for nVIDIA and BCM5705
     Gigabit LAN with link/activity LED
 • Stacked two USB v2.0 ports & one RJ45 port for
     Intel 82551 10/100 LAN w/ link/activity LED

Integrated I/O Interfaces
 • Four USB v2.0 ports (via cable)
 • One COM port (via cable)
 • Tyan 2 x 9 front-panel pin header
 • 2 x 25 pin SMDC pin header

System Management
 • SMSC DME1737 with hardware monitoring
 • Total of six 4-pin FAN connectors:
     FAN1, 2, 3, and CPU FAN all have tachometer
     and auto FAN control, FAN4 has only auto FAN
     control with FAN3 and FAN 4 always run
 • Temperature and voltage monitoring
 • Watchdog timer

Integrated Serial ATA Controller
 • Serial ATA-II Host controllers embedded
 • Supports four Serial ports running at 3Gb/s
 • NV RAID RAID 0, 1, 0+1 and JBOD support
 • SATA activity LED connector

Integrated PCI IDE
 • Single ch. master mode supports two IDE devices
 • Support for ATA-133/100/66/33 IDE drives
     and ATAPI compliant devices

Integrated LAN Controllers
 • One Broadcom BCM5705 GbE controller
    - Operates at PCI v2.2 interface
    - Pin headers for front panel LAN LED
 • One Intel 82551 10/100 LAN controller (G3NR)
    - Operates at PCI v2.2 interface WOL/PXE support
    - Pin headers for front panel LAN LED
 • One integrated nVIDIA MAC with Marvell
     88E1111-CAA GbE PHY
    - 32bit PCI v2.3 interface
    - WOL/PXE support
    - Pin header for front panel LAN LED

Intelligent Platform Management Interface Header (2x25 SMDC pin header)
 • Tyan Server Management Daughter card M3291
     (optional) supports features listed below:
     FAN1, 2, 3, and CPU FAN all have tachometer
 • SMDC Pin Header option is available on
     S2866G3NR-RS SKU only

Integrated PCI 1394a (S2866A2NRF)
 • VIA VT6307 PCI FireWire (1394a) controller
 • Two 1394a ports (via cable)

Integrated Audio (S2866A2NRF)
 • Realtek ALC655 audio CODEC
 • AC'97 Rev.2.3 supported
 • CD-in connector

Integrated PCI Graphics (S2866G3NR)
 • XGI Volari Z7™ PCI graphics controller
 • 16MB Frame Buffer of video memory

BIOS
 • Award BIOS 8Mbit Flash
 • Supports APM 1.2 & ACPI 1.0
 • PnP, DMI2.0, WfM2.0 Power Management

Power
 • ATX 12V support, on board 4-phase VRM
 • Universal 24-pin + 8-pin power connectors
 • 4-pin auxiliary power connector

Form Factor
 • ATX footprint (12" x 9.6"; 305mm x 244mm)

Regulatory
 • FCC Class B (Declaration of Conformity)
 • CE (Declaration of Conformity)

Special Accessories
 • SLI card M5001
 • SLI bridge card M5000 (S2866A2NRF only)