1 x Quad Core Intel® Xeon® E5620 (2.40GHz) Processor (12MB L3 cache, 80W, DDR3-1066, HT, Turbo 1/1/2/2) Intel® 5520 Server Chipset with 2 Processors Support 4GB (2 x 2GB) PC3-10600R DDR3-1333 Registered DIMMs Support up to 24 SFF 2.5” Hard Drives (with Optional Drive Cage) HP Smart Array P410i/256MB Controller (RAID 0/1/1+0/5) HP 16x DVD-ROM Drive; No Floppy Drive Integrated NC375i Quad Port Multifunction Gigabit NIC Integrated ATI RN50 64MB Video Controller 10 PCI Express Gen2 Expansion Slots (9 available) Slide-out Systems Insight Display Panel for Easy Diagnostics Includes HP Insight Foundation & Proliant Onboard Administrator Supports Windows Server, RHEL, SLES, OEL, VMware, Solaris & Citrix 460Watts Hot Plug Power Supply; 3 x Hot Plug Fans HP Standard Keyboard; HP PS/2 Scroll Mouse Dimensions: 18.52 x 9.75 x 29.12 in; Weight: 30 kg min. 4U Tower Form Factor 3 Years Manufacturer Limited Warranty