HP ProLiant ML150 G6 E5520 1P 4GB-U P410/256 SAS/SATA 460W PS Server. Processor clock speed: 2260 MHz, Processor family: Intel Xeon Processor E5520, Processor upgrade: Upgradeable to 2 processors (Dual or Quad-Core). Number of hard drives supported: None ship standard. Internal memory: 4096 MB, Internal memory type: PC3-10600E (UDIMM), Maximum internal memory: 48 GB. Optical drive type: DVD-ROM. Networking features: Embedded HP NC107i PCI Express Gigabit Server Adapter