Iomega NAS P400m 250GB H-Swap, 250 GB, 7200 RPM, 8 MB, 1.09 kg, 220 x 110 x 250 mm Iomega NAS P400m 250GB H-Swap. Storage drive capacity: 250 GB, HDD speed: 7200 RPM, Drive device, buffer size: 8 MB. Weight: 1.09 kg. Dimensions (WxDxH): 220 x 110 x 250 mm