Seagate Barracuda 7200.8 400GB Ultra ATA/100 Internal Hard Drive (ST3400832A) Internal hard drive with 400 GB capacity, 7,200 rpm rotational speed, 8 ms seek time, and Ultra ATA/100 interface Award-winning DiscWizard software makes installation a snap Built-in self-monitoring technology continuously checks your hard drive for data safety and drive performance SoftSonic motor ensures whisper-quiet acoustics Works with Windows XP, ME, 2000, 98SE, and NT; may be used with Linux, Mac OS, and Netware