HGST Travelstar 5K750, 640 GB, 20 PK 640GB Serial ATA II

5K750 - 640 GB, 20 Pack Travelstar™ 5K750 is a 5400 RPM, 375GB/platter, 2.5-inch hard drive with capacities of 500GB, 640GB and 750GB. This standard 9.5mm, two-disk design, intended for use in notebook PCs, external storage, gaming consoles and other mobile applications, is Hitachi’s first to leverage Advanced Format. Advanced Format increases the physical sector size on hard drives from 512 bytes to 4096 (4K) bytes, which increases drive capacities and improves error correction capabilities.