Store more data with the Hitachi Travelstar 320 GB hard drive. It makes an ideal upgrade for an older system or the root drive for a new PC build. Thinner than most hard drives in its class, this drive is made to fit with the 2.5-inch standard. It holds over 200,000 pictures, 40,000 MP3 songs, and 600 hours of video playtime. It also stores over 700,000 documents, making it an ideal choice for a work system. Its lightweight and slim build is optimized for micro-ATX and mini-ATX configurations. Energy efficient, this internal hard drive comes with an 8 MB buffer for quicker data transfer speeds.