IBM 07N6652 Hard drive 20GB 7200rpm 3.5" IDE Deskstar internal IBM Deskstar 20 GB UDMA/100 IDE Hard Drive General Features: 20 GB formatted capacity UDMA/100 7200 RPM spindle speed 2MB buffer 8.5 ms average access time (read) 4.17 ms average latency IDE interface 3.5-inch form factor Regulatory Approvals: CE UL MIC C-Tick