Origin Storage Thecus N4100 Pro High Performance NAS device inc. 2TB. Total storage capacity: 2000 GB, Hard drive capacity: 500 GB, RAID levels: 0, 1, 5, 6, 10, JBOD. Compliance industry standards: 802.3ad, Supported network protocols: CIFS/SMB, AFP 3, NFS v3, FTP, HTTP, HTTPs. Compatible operating systems: Windows 2000 / XP / 2003, MAC OS X