Specifications Desktop, compact form factor Marvel Armada XP 1.3GHz, dual-core 512MB DDR3 Memory Network type: Ethernet 10/100/1000 Mbps USB ports: 1x USB 3.0, 2x USB 2.0 Hard drives: Diskless or four (4) SATA II (depending on model) RAID level: JBOD, RAID 0, RAID 5 (Parity), RAID 10 (Mirroring) Media server: Built-in DLNA certified media server and iTunes server 2 x RJ45 10/100/1000Mbps (GbE) Ethernet port LAN standards: IEEE 802.3, IEEE 802.3u Power consumption - 5 Watts (min) - 19 Watts (max) Acoustic noise - 28 dBA maximum Network File Protocols Supported CIFS/SMB/Rally (Microsoft), NFS (Linux/UNIX), AFP/Bonjour (Apple), FTP, FTP, TFTP, HTTP, HTTPS, WebDAV, Windows DFS, SNMP. Operating System EMC LifeLine - A fully-developed Linux operating environment and suite of applications Physical Dimensions Width: 19.6cm Length: 20.64cm Height: 16.78cm Weight: 4.46 kg (0 drives included); 5.12 kg (2 drives included); 7.08 kg (4 drives included) PC Users: Pentium 300Mhz processor or higher Must meet minimum RAM requirements for your operating system Microsoft Windows XP / Vista / 7 (all versions - exclusive of XP 64 bit fo model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : NAS