Processor, operating system and memory Processor Intel® Xeon Quad-Core ® Processor E5620 80W 2.40GHz/1066MHz/12MB Number of processors 1 Processor upgrade 2 Standard memory 4GB (2 x 4GB) PC3-10600 1333Mhz ECC DDR3 SDRAM DIMM Memory Memory slots up to 128GB / 16 DIMM slots Internal drives Internal drives No Storage controller Serveraid M1015 ( support 0,1,10) Internal drive bays 4/4 Storage Optical drives DVD-ROM System features Form factor Tower (5U) Chipset -- Network interface Dual gigabit 10/100/1000 ethernet /Broadcom® 5709C External I/O ports -- Expansion slots Six PCIe and one PCI standard; additional two PCI-X available via configure to order and requires removal of one PCIe slot Power supply type 920W Hotswap Compatible operating systems Microsoft® Windows® Server 2008 R2, Red Hat Linux®, SUSE Linux, VMware ESX Server; integrated hypervisor key Product weight --