Apple Certified ST3500630AS SEAGATE Barracuda 500GB Hard Disk Drive SATA II 7.2K 3.5'' HDD 655-1359B (9BJ146-043) : Amazon.co.uk: Computers & Accessories
Seagate BarraCuda 7200.10 ST3500630AS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Hard Drive (Perpendicular Recording) Bare Drive - Newegg.com