Western Digital 500GB Caviar RE2 Sata II 7200 Rpm 16MB 3.5LP 300MB/S WD5000YS Western Digital Caviar RE2 500 GB SATA/300 Hard Drive General Features: 500 GB storage capacity 7200 RPM rotational speed 16 MB buffer 4.20 ms average latency 8.7 ms read seek time SATA 300 MB/s interface Buffer to Host (Serial ATA) transfer rate: 3.0 Gb/s (Max) 3.5-inch form factor Regulatory approvals: FCC cUL CE C-Tick MIC