Western Digital Scorpio Black 320GB 7200rpm Internal SATA Hard Drive - 2.5" without Freefall Sensor

Product Description

Maximize notebook computer performance with this 7200 RPM,
SATA 3 Gb/s, high-capacity hard drive.

Designed with top-of-the-line notebook computers in mind, this high performance drive delivers the capacity and speed needed to supercharge a notebook PC without compromising battery life or quiet acoustics. Features like these also make this drive an outstanding option for compact desktops, external hard drives, gaming systems, and blade servers.

Desktop-class performance for notebook computers - With 7200 RPM spin speed, 16 MB cache, and capacities up to 320 GB, these drives enable you to have the best of both worlds: the capacity and performance of a desktop PC with the convenience and portability of a notebook.
Massive capacity - WD's 320 GB 2.5-inch drives offer huge capacity for space-hungry operating systems like Windows Vista, with plenty of room left over for photos, music, and video.
Low power consumption - With technologies like IntelliSeek, which calculates optimum seek speeds to lower power consumption [View demo] and SecurePark, which reduces power by parking the heads during low power idle mode, this drive delivers 5400 RPM-equivalent power consumption in a 7200 RPM drive [View demo].
Quiet - In a notebook drive, silence is golden. WD's exclusive WhisperDrive combines state-of-the-art seeking algorithms to yield one of the quietest 2.5-inch hard drives on the market.
Reliable and rugged

• WD's ShockGuard technology protects the drive mechanics and platter surfaces from shocks during shipping and handling and in daily operation.
• WD's SecurePark parks the recording heads off the disk surface during spin up, spin down and when the drive is off. This ensures the recording head never touches the disk surface resulting in improved long term reliability due to less head wear and improved shock tolerance.

Free-fall sensor - As an added layer of protection, if the drive (or the system it's in) is dropped while in use, WD's free-fall sensor detects that the drive is falling and, in less than 200 milliseconds, parks the head to help prevent damage and data loss.
Tested for compatibility - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give WD customers confidence that our drives will work in their systems.
Ideal For

Portable digital devices of all kinds, including notebook computers, external storage, and digital media players.

Product Specifications

Hard drive capacity320GB
Hard drive rotational speed7200RPM
Hard drive interfaceSerial ATA
Hard drive size2.5""
Drive device, buffer size16MB
Read seek12ms
Average latency5.5ms
Track to track seek time (read/write)2ms
Bytes per sector512
Start/stop cycles600000
Data transfer rate3Gbit/s
Power consumption2.50W
Power consumption (standby)0.15W
Power consumption (off)0.85W
Operating temperature range (T-T)5 - 60°C
Storage temperature range (T-T)-40 - 65°C
Operating relative humidity range8 - 90%
Storage relative humidity range5 - 95%
Operating altitude-305 - 3050m
Non-operating altitude-305 - 12200m
Operating shock275G
Non-operating shock900G
Operating vibration0.00459G
Non-operating vibration0.05102G
Hard disk transfer rate100Mbit/s
Colour of productBlack
Acoustic pressure emissions22dB