WD Blue 500 GB 3.5-inch SATA 6 Gb/s 5400 RPM 64 MB Cache PC Hard Drive (113)
WD Blue 500 GB 3.5-inch SATA 6 Gb/s 5400 RPM 64 MB Cache PC Hard Drive (113),WD Blue 500GB Mobile Hard Disk Drive - 5400 RPM SATA 6 Gb/s 7.0 MM 2.5 Inch - WD5000LPVX,43KB,Amazon.com: Western Digital Blue WD5000AZLX 500GB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5,WD Blue WD5000LPZX 500 GB Hard Drive - 2.5