HP QK554AT internal hard drive 500 GB Serial ATA

HP Serial ATA Hard Drives maximize the performance of HP Business PCs by providing the technologies to meet your increasing storage demands with high-capacity drives offering superior reliability and performance. HP Serial ATA 6.0-Gb/s Hard Drives offer data transfer rates of up to 6 Gb per second doubling your interface speed over SATA 1.5-Gb/s Hard Drives. - Improved protocol for enhanced data integrity. - Enhanced security prevents access to user data until one or two user-defined passwords are provided. - Thinner and smaller serial cables and connectors for easy routing and improved system cooling. - SMART IV technology constantly checks that the data flow from host interface to media and media to host interface is not compromised. - Native Command Queuing allows the hard drive to have several write or read commands outstanding at the same time.