Iomega 250 GB Gigabit Ethernet. Hard drive capacity: 250 GB, Hard drive rotational speed: 7200 RPM, Drive device, buffer size: 8 MB. Networking features: Ethernet/Fast Ethernet 10/100/1000 Mbps. Weight: 1.22 kg. Package dimensions (WxDxH): 100 x 236 x 265 mm. Compatible operating systems: Microsoft Windows 98SE/Me/2000/XP; Mac OS X 10.2.7 +;