The product is a set of three Maxtor 40GB PATA IDE ATA 3.5" hard drives, designed for use in desktop PCs. These silver-colored drives are part of the DiamondMax or Fireball or D540 product lines, with a storage capacity of 40GB each. They offer a high read speed and are compatible with HDD drive types. These internal desktop drives are tested and reliable for storing data and files within a computer system.