Netgear ReadyNAS Duo (1 x 500 GB). Total storage capacity: 500 GB, Hard drive capacity: 500 GB, Hard drive interface: Serial ATA II. Memory type: PC2700 DDR-SDRAM SO-DIMM, Internal memory: 256 MB, Flash memory: 64 MB. Supported network protocols: CIFS/SMB, AFP 3.1, NFS v2 / v3, HTTP/S, FTP/S, Networking features: 10/100/1000 Ethernet. Power requirements: 100-240V AC, 50/60 Hz, Power consumption (typical): 35 W. Weight: 2.07 kg