Western Digital 500GB Scorpio Blue internal hard drive 5400 RPM 8 MB 2.5" Serial ATA II

Massive capacity.
Storage capacity for 2.5-inch form factor drives with standard 9.5 mm height has arrived at a realm once thought to be impossible - up to 1 TB - giving you all the capacity you need to keep your photos, music and files right there on your notebook.

Low power consumption.
State-of-the-art seeking algorithms and advanced power management features ensure low power consumption and long battery life.

Ultra quiet.
In a notebook drive, silence is golden. WD's exclusive WhisperDrive technology yields one of the quietest 2.5-inch hard drives on the market.