Seagate ST3500830AS 500GB 7200RPM 8MB SATA/300 Hard Drive Seagate ST3500830AS 500GB SATA/300 7200RPM 8MB Hard Drive General Features: 500 GB formatted capacit Serial ATA/300 interface (3Gb/s) 7200 RPM spindle speed 8MB buffer &lt;8.5ms average access time (read) &lt;10ms average access time (write) 4.16 ms average latency 3.5-inch form factor Regulatory Approvals: UL CE C-Tick BSMI 180-DAY FACTORY RECERTIFIED WARRANTY