The server uses an Intel SRMK2 base platform. See: http://www.intel.com/support/motherboards/server/srmk2/

Brief specs:

• Chassis: Rack-mount, 1U ("pizza box"), AC power
• CPU: 2 x 866 MHz Pentium III CPUs
• RAM: 1 GB, 133 MHz, ECC
• Storage
  • 2 x 73 GB Seagate Cheetah 10K.6 hard disk drives
    • Seagate model ST373307LC
    • Also known as IBM P/N DTN073C1UCDY10F
    • SCSI, wide, SCA 80-pin hot swap, 320 MB/sec (Ultra320)
    • 10,000 RPM; 8 MB onboard cache
  • 1.44 MB floppy drive
  • CD-224E slim IDE CD reader
  • No free drive bays
• NIC: 2 x Intel 82559 (10/100)
• Slots: 2 x 64-bit, 66 MHz, PCI, both open
• VGA: ATI Rage XL, 4 MB, onboard
• PS/2 keyboard & mouse; 2 x USB (USB 1); 9-pin RS-232 serial
• SCSI: Adaptec AIC-7899, Ultra160, 2 channels

The only physical space not consumed is around the two open PCI slots.

ServerHardwareDetails has gory details, BIOS settings, and the like.