HP StorageWorks Ultrium 448 SAS External Drive, StorageWorks. Native capacity: 200 GB, Compressed capacity: 400 GB. Sustained data transfer rate (compressed): 48 MB/s, Sustained data transfer rate (native): 24 MB/s. Drive device, buffer size: 64 MB. Dimensions (WxDxH): 223.5 x 297.2 x 76.2 mm, Weight: 4.67 kg, Size: 223.5 mm (8.8 "). Colour of product: Black