Seagate ST9100821AS 100GB SATA/300 7200RPM 8MB 2.5" Notebook Hard Drive Seagate ST9100821AS 100GB SATA/300 7200RPM 8MB 2.5" NB HDD General Features: 100 GB formatted capacity SATA/300 data transfer rate (3.0 Gb/s) 7200 RPM spindle speed 8 MB buffer 4.17 ms average latency 11 ms average seek time 2.5-inch form factor Serial ATA interface Regulatory Approvals: CE cULus MIC C-Tick BSMI WEEE