The ThinkPad 160 GB 5400 rpm Serial ATA Hard Drive option makes it easy to upgrade the primary hard drive of supported ThinkPad notebooks. This new ThinkPad hard drive balances the requirements of capacity, performance, size, and reliability to meet the exacting standards of ThinkPad customers. For additional storage and backup capability, use the optional ThinkPad Serial ATA Hard Drive Bay Adapter 40Y8725 to install the ThinkPad 160 GB Serial ATA Hard Drive in the: - Media bay in supported ThinkPad notebooks such as the ThinkPad T60 Series notebooks - ThinkPad Advanced Dock media bay - ThinkPad X6 UltraBase - ThinkPad X6 Tablet UltraBase.Features & Benefits:The ThinkPad 160 GB 5400 rpm Serial ATA Hard Drive option incorporates the latest technology for enhanced mobile productivity:- SATA Interface conforming to Serial ATA/High Speed Serialized AT Attachment- Low power consumption- Perpendicular recordingFeatureProduct FeaturesWeight & dimensionsDimensions W x D x H70 x 100 x 9.5mm Weight100g Height9.5mm Width70mm Depth100mm Disk driveHard disk drive capacity160GB InternalY Hard disk rotational speed5400RPM Hard disk interfaceSerial ATA Hard disk size2.5 Average latency5.5ms Hard disk number of heads2 Drive device, buffer size8MB Hard disk average seek time11ms Environmental conditionsOperating temperature range T-T5 - 55¶øC Operating relative humidity range8 - 90%