Super P4DC6+ motherboard . featuring: Dual socket 603 AGP pro slot 2x 64-bit PCI-X slots 4x regular PCI slots Intel 860 chipset Onboard Adaptec dual-channel Ultra-160 controller Onboard Intel Pro/100 Ethernet Onboard USB and sound 2x Intel Xeon 2.2GHz CPUs, with hyper-threading (BIOS shows 4 CPUs present) 1GB Samsung RDRAM PC800 ECC memory (2x512MB installed), 2 slots free (filled with continuity rimms) (all tested good in Memtest, no errors) ATI Rage PCI graphics card Supermicro rackmount case with room for 6 SCA SCSI hard-drives (none installed), all caddies present/empty. Spare 5.25-inch front bay Rackmount rails are fitted CD-ROM Floppy drive