Hard Disk       Product Picture         Product Information   SKU # HDHD728040PLAT2     Manufacturer Hitachi     Features  - Industry-leading 8.5ms average seek time  - Lowest power requirements  - Optional low acoustic and power modes     Specifications    - Capacity 40GB  - Interface Ultra ATA 100  - Data Transfer 100 MB/s  - Access Time 8.5ms  - RPM 7200  - Buffer 2MB  - Dimensions 1" x 4" x 5.75" ( H x W x D)  - Weight 640 g