Western Digital Scorpio Blue WD800BEVT 80GB 5.4K 2.5" SATA Hard Drive Silent - In a notebook unit, silence is gold. WD's exclusive WhisperDriveTM combines cutting-edge search algorithms to achieve one of the quietest 2.5" hard drives on the market. These algorithms also optimize how the drive searches for data, significantly improving energy consumption. Now silence (and greater battery life) is golden. Reliability and robustness - WD ShockGuardTM technology protects unit mechanics and plate surfaces from impacts. The WD SecureParkTM system parks the recording heads out of the disk surface during the start, stop and shut off the drive. This ensures that the recording head never touches the surface of the disk, improving long-term reliability thanks to the less wear of the cartridge and the better tolerance to non-operative impacts. Fast and efficient - With a rotation speed of 5400 RPM, a 12 ms access time and a SATA interface speed up to 3 Gb/s, even the most demanding customers will appreciate the performance obtained by the Scorpio Blue WD units. Operating speed 050 mm RH without condensation 5-95% RH without condensation Altitude (English) Operating - From 1,000 to 10,000 feet Not operating - From 1,000 to 40,000 feet Altitude (metric) Operating From -305M to 3.050M Not operating From -305M to 12.200M Functioning Linear vibrations 10-500 HDC, 1,0G (from 0 to peak)