P/N 7976KJG IBM 3400 System X Xeon Quad Core 5410 2.33GHz, RAM 4 GB PC2-5300 DDR2 667 ( + 4 slot available , MAX 32 GB ) 2 X Hard Disk 500GB Hot-Swap SATA II SAS/SATA , RAID Controller 8k (0,1,5,10,50) , DVD/CDRW Combo Gigabit Ethernet Expansion ports: 4 USB 2.0 Microsoft? Windows 2003 Server Std 2003 R2 /SP2 32bit DSP with 5 Clients (original)