Netgear ReadyNAS 2100 Xchange. Total storage capacity: 0 GB, Hard drive capacity: 0 GB, RAID levels: 1/JBOD. Flash memory: 256 MB. Networking features: Gigabit Ethernet, Cabling technology: 10/100/1000 BASE-TX. Weight: 1360 g. Compatible operating systems: Windows XP/Vista/2000 Mac OS X Linux