Lenovo ThinkServer RD220, 2.26 GHz, E5520, 2 GB, DDR3-SDRAM, 584 GB, Rack (2U) Lenovo ThinkServer RD220. Processor family: Intel® Xeon® 5000 Sequence, Processor frequency: 2.26 GHz, Processor model: E5520. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM, Memory layout (slots x size): 1 x 2 GB. Total storage capacity: 584 GB, HDD size: 2.5", HDD interface: Serial Attached SCSI (SAS), Optical drive type: DVD-RW. Power supply: 675 W, Redundant power supply (RPS) support. Chassis type: Rack (2U)