One Windows is simply not enough! Call US +1 877 734 6106 to find out Call UK 0800 027 2002 to find out Western Digital Scorpio 2.5" Hard Disk   Specification WD Scorpio delivers best-in-class performance with power requirements comparable to much slower drives. In addition, you'll get the quietest 2.5-inch drive on the market, and the one with ruggedness, reliability, and data-protection features that actively watch over valuable data. WD Scorpio spins at 5400 RPM for fast performance but has power specifications similar to slower 4200 RPM drives. Low power consumption yields longer battery life and increased overall reliability. It features WD's exclusive WhisperDrive technology with SoftSeek algorithms to deliver the quietest 2.5-inch hard drive on the market. WD Scorpio provides ShockGuard to protect the drive mechanics and delicate platter surface from shocks, both when it's in use and when it's not. This leading-edge technology enables WD drives to meet the highest combined shock tolerance specifications in its class: 250 Gs while in operation, 900 Gs when it's idle. DuraStep Ramp locks the heads off the data disk to provide additional shock protection. Utilizing the most technologically advanced material available on the market, the drive is able to execute a minimum of 600, 000 load/unload cycles without contamination - up to twice the performance of its competitors. WD Scorpio has a rigid stainless steel cover, unlike other devices, that will withstand greater than 5 pounds of pressure - nearly 1.5 times the industry average without pinching the motor hub or other internal components. Average Latency - 5.5 ms Average Seek Time - 12 ms Buffer Size - 2 MB Capacity - 40 GB Compliant Standards - S.M.A.R.T. Connector - 44 PIN IDC Data Transfer Rate - 100 MBps Form Factor - 2.5" Hard Drive Type - Internal hard drive Interface Type - EIDE Non-Recoverable Errors - 1 per 10^14 Spindle Speed - 5400 rpm Start / Stop Cycles - 600,000 Track-to-Track Seek Time - 2 ms