The 640GB SATA Hard Disk Drive Kit for Mac Pro from Apple is a high-capacity internal drive for use in the Mac Pro. Boasting a Serial ATA interface that allows for burst transfer rates of up to 300MB/sec and a rotation speed of 7200rpm, this drive is an excellent solution for adding storage capacity to your Mac Pro.
Direct-attach drive solution for Mac Pro
Slides directly into place, there are no cables or connectors to worry about
Compatible with Mac Pro (early 2009) systems running Mac OS X v10.5.6