Netgear ReadyNAS 2304, Rackmount 1U 4-bay, Dual Gigabit Ethernet - Intel Celeron Dual-core (2 Core) 2 GHz - 4 x HDD Supported - 40 TB Supported HDD Capacity - 2 GB RAM DDR3L SDRAM - Serial ATA Controller - RAID Supported 0, 1, 5, 6, 10, Hot Spare, JBOD, X-RAID - 4 x Total Bays - 4 x 2.5"/3.5" Bay - Gigabit Ethernet - eSATA - 3 USB Port(s) - 3 USB 3.0 Port(s) - Network (RJ-45) - ReadyNAS OS 6 - LACP, DLNA, WEBDAV, IPv6, SMTP, NTP, RSync, NFSv3, iSCSI, AFP, IPv4, ... - 128 MB Flash Memory Cap DUAL GIGABIT ENET