Motherboard
 • TYAN Thunder K8SR (S2881)
 • Dual AMD Opteron™ system board
     - S2881G2NR for B2881G28S4H
     - S2881UG2NR for B2881G28U4H
 • Extended ATX footprint (13" x 12")

Processor
 • Dual PGA 940-pin ZIF sockets
 • Supports up to two AMD Opteron™ processors
 • Supports single/dual core

Chipset
 • AMD-8131™ HyperTransport™ PCI-X Tunnel
 • AMD-8111™ HyperTransport™ I/O Hub
 • Winbond™ W83627HF Super I/O ASIC
 • Analog Devices ADM1027 Hardware Monitoring IC

Memory
 • 128-bit dual channel memory bus
 • (8) 184-pin 2.5-Volt DDR DIMM sockets
 • Supports up to 16GB of Reg. DDR memory
 • Supports ECC type memory modules
 • Supports DDR 400/333/266 memory module

Expansion Slot
 • (2) 64-bit 133/100MHz PCI-X slots
 • Support 1 full height / 1 half height cards

Integrated LAN Controllers
 • (2) GbE ports (Broadcom BCM5704C dual-channel
    GbE LAN controller connected to PCI-X bridge),
    with teaming feature support

BIOS
 • AMI BIOS 8.0 on 4Mbit LPC Flash ROM
 • Supports ACPI 1.0b & 2.0
 • PnP, DMI2.0, WfM2.0 Power management
 • Power Management S1, S4, and S5 support

Back I/O Ports
 • Stacked PS/2 Mouse & Keyboard ports
 • Stacked two USB 1.1 ports; (2) RJ45 connections
 • (1) 9-pin UART Serial port; (1) 15-pin VGA port

Integrated PCI Graphics
 • ATI® RAGE™ XL 8MB PCI graphics controller

Chassis Form Factor
 • Industry 19" rack-mountable 1U chassis
 • Dimension (inch): 17" (W) x 26.5" (D) x 1.7" (H)
 • Dimension (mm): 432 (W) x 673 (D) x 43 (H)

Storage
 • (4) external 3.5" HDD bays
 • Pre-installed slim 24x CD-ROM drive
 • Hard Disk Drives
    - B2881G28S4H: support 4 hot-swappable
       SATA HDD bays with RAID 0, 1, and 1+0
    - B2881G28U4H: support 4 hot-swappable
       Ultra320 SCSI HDD bay

Integrated Storage Controller
 • Dual channel IDE
 • Silicon Image SiI 3114 4-port SATA RAID
     controller for B2881G28S4H
 • Adaptec AIC-7902 dual channel Ultra320 SCSI
     controller for B2881G28U4H

Power Supply - EPS 12V 400W output w/ PFC

System Cooling
 • Six 40 x 40 x 28 mm ball-bearing fans
 • Two passive CPU copper heatsinks
 • Special-designed air duct

Front Access I/O ports
 • I/O - (1) USB 1.1 ports
 • LED indicators
     - (1) IDE channel activity LED
     - (2) LAN link/activity LEDs
     - Power LED
 • Switch - power & reset

Server Management
 • Optional Tyan SMDC (remote server
    management kit), IPMI 1.5 compliant
 • System fan speed control

Regulatory
 • FCC Class B (Declaration of Conformity)
 • CE (Declaration of Conformity)
 • UL (Underwriters Laboratories Inc.) certified