WesternDigital 250GB Caviar SE SATA Internal Hard Drive Kit (WD2500JDRTL) Hot plug support - allows swapping of hard drives without having to power down SecureConnect - provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives 8 MB cache - fast data transfer from a cache four times larger than the industry-standard 2 MB size Compatible with Windows XP, 2000