BUFFALO TeraStation 3400r 4-Bay 4 TB (4 x 1 TB) RAID 1U Rack Mountable NAS & iSCSI Unified Storage - TS3400R0404 Standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab Port RJ-45: 2 x 10/100/1000M Port USB: 2 x USB3.0 + 3 x USB2.0 HDD Interface: 4 x SATA (4 x Bay) Form Factor: 1U Operating System: Client OS Support: Windows 8 (32-bit/64-bit), Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit), Windows XP, Windows 2000, Windows Server 2008, Windows Server 2003, Windows 2000 Server Processor: Dual-core 1.33 GHz ARM Default/ Max. Memory: 1GB