100GB 2MB Cache Pata / 100  3.5IN Int.drive Seagate ST3100011A 100 GB UDMA/100 IDE Hard Drive General Features: 100 GB formatted capacity UDMA/100 7200 RPM spindle speed 2 MB buffer 8.5 ms average access time (read) 9.5 ms average access time (write) 4.16 ms average latency 3.5-inch form factor E-IDE/ATAPI interface Regulatory Approvals: UL CSA CE C-Tick BSMI