Buffalo TeraStation 3420RN Rackmount 4TB NAS Hard Drives Included (2 x 2TB, 4 Bay) - Annapurna Labs Alpine AL-214 Quad-core (4 Core) 1.40 GHz - 4 x HDD Supported - 2 x HDD Installed - 4 TB Installed HDD Capacity - 1 GB RAM DDR3 SDRAM - Serial ATA/600 Controller - RAID Supported 0, 1, 5, 6, 10, JBOD - 4 x Total Bays - 2.5 Gigabit Ethernet - 3 USB Port(s) - 3 USB 3.0 Port(s) - Network (RJ-45) - iSCSI, TCP/IP, CIFS/SMB, FTP, FTPS, NFS - Rack-mountable - TAA Compliant: