2UR5339 - Seagate-IMSourcing Cheetah 15K.3 ST373453LC 73 GB 3.5quot; Internal Hard Drive Buffer - 8 MB Maximum_External_Data_Transfer_Rate - 320 MBps 2.5 Gbps Maximum_Internal_Data_Transfer_Rate - 111.4 MBps 891 Mbps Drive_Interface - SCSI