DiamondMax 21 Series from Maxtor has been designed to provide reliability and value for home or office desktop PC users. The drive offers the most efficient support of desktop capacity points 40GB to 320GB. The DiamondMax 21 Series disk drive design combines performance with low acoustics. The robust design of the DiamondMax 21 Series drive has been engineered to deliver reliability and data integrity. The drives have been designed to protect against operating and non-operating shock.