Hitachi Travelstar 5K100 100GB UDMA/100 5400RPM 8MB 2.5" IDE Hard Drive Hitachi Travelstar 5K100 HTS541010G9AT00 2.5-inch Hard Drive General Features: 100 GB storage capacity 5400 RPM spindle speed UDMA/100 interface (Parallel-ATA) 8 MB data buffer 5.5 ms average latency 12 ms average seek time 493 Mbits/sec maximum media transfer rate 100 Ultra DMA mode-5 Mb/s maximum interface transfer rate 16.6 PIO mode-4 Mb/s maximum interface transfer rate