Form Factor: Tower Port RJ-45: 2 x 10/100/1000M Port USB: USB 2.0 host port x3 (Front x1, Back x2) (A Type) HDD Interface: SATA x2 , 1x eSATA for external Supported Protocols: Transport Protocols: TCP/IP/Appletalk File Protocols: SMB/CIFS, HTTP/HTTPS, FTP, TFTP, NFS v3, AFP Operating System: Windows 2000/XP/2003/Vista/7 UNIX/Linux Mac OS X Processor: Intel Atom D525 Processor Management: Download Manager (Module) - HTTP / FTP / BT / eMule / NZB Power management - Schedule power on/off: Supported Volume management - Multiple file system selectable: EXT3 / EXT4 / XFS / ZFS