667 / 1066 / 1333 MHz FSB 2. Up to 32GB 667/533MHz DDR2 ECC
FB-DIMM (Fully Buffered DIMM) 3. 1 (x16) & 1 (x4 in x16) PCI-Express,
2x 64-bit 133/100MHz PCI-X,
1x 64-bit 100MHz PCI-X,
1x 32-bit PCI 33MHz 4. Intel® (ESB2/Gilgal) 82563 Dual-port
Gigabit Ethernet Controller 5. 6 x 1" hot-swap SATA Drive
Bays 6. 645W Low-Noise Power Supply 7. Tower or Rackmount 8. PWM Fan Speed Control