Western Digital Caviar Blue 640GB,Intern,7200 1/min,8,89 cm (3,5") (WD6400AAKS)

Western Digital Caviar Blue 640GB WD6400AAKS 7200RPM 3.5" SATA II Hard Drive - Tested. Model: WD6400AAKS. Series: Caviar Blue. Speed: 7200 RPM. Capacity: 640 GB. Fully working and tested. Drive securely wiped and health-checked (no bad sectors).

eBay