Buffalo HS-D1.0TGL/R5 1.0TB TeraStation Home Network Attached Storage Four operational modes: Standard, Spanning, Mirroring and RAID 5 Removable hard drive rack allows quick swapping of hard drives should a drive fail 10/100/1000 Gigabit Ethernet port and Jumbo Frame capability for higher transfer speeds Four USB 2.0 ports, allowing 4 simultaneous USB connections Built-in print server for sharing and managing a USB printer on the network.