Seagate Barracuda ATA IV 40 GB UDMA/100 7200 RPM 2 MB IDE Hard Drive General Features: 40 GB formatted capacity 7200 RPM spindle speed 2 MB buffer 9 ms average seek time 4.17 ms latency UDMA/100 data transfer rate E-IDE/ATAPI interface Regulatory Approvals: CE UL CSA MIC C-Tick