Western Digital WD5000YS 500GB 7200RPM 16MB SATA/300 Hard Drive Western Digital Caviar SE16 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 3.5-inch form factor Regulatory approvals: FCC cUL CE C-Tick MIC 2-YEAR DIRECT WARRANTY -COMES WITH DRIVE ONLY - MANUAL, CABLES OR SOFTWARE ARE NOT INCLUDED