Manufacturer: Seagate Technology Inc. Part number: ST91208220AS-25PK GeneralStorage type Hybrid hard drive Packaged Quantity 25 Device Type Hybrid hard drive - Internal hard drive Width 2.8 in Depth 3.9 in Height 0.4 in Weight 3.5 oz Hard DriveForm Factor 2.5 x 1/8H Capacity 120 GB Interface type Serial ATA-150 Non-Volatile Cache Capacity 256 MB Data Transfer Rate 150 MBps Spindle speed 5400 rpm Buffer size 8 MB Hard drive compliant standards S.M.A.R.T. Features QuietStep, Perpendicular Recording PerformanceDrive Transfer Rate 150 MBps (external) / 44 MBps(internal) Seek Time 12.5 ms(average) Average Latency 5.6 ms Storage ControllerType None ReliabilityStorage Hard Drive / Non-Recoverable Errors 1 per 10^14 Storage Controller (2nd)Type None Expansion / ConnectivityInterfaces 1 xSerial ATA-150 - 7 pin Serial ATA Compatible Bays 1 x Internal - 2.5 x 1/8H Compatible Slots