The hard drive is an 80 GB , connects by IDE and is a Seagate Barracuda. Model is 7200.2 . The speed is 7200 RPM and is ultra ATA/100 . Works excellent, only ever used for storage of media, not a operating system. Dont know much more about them but it worked the way I needed it. Its blank now for your use. Hard to find in this size and speed anymore, most are sata or expensive. Asking $25.00 ( below the lowest ebay price!) , I'm in Missoula and would like buyers from the same, now accepting Paypal ! Use a credit or debit card! *Picture is a sample, they all look the same. This one is in excellent physical condition all around. Location: Missoula it's NOT ok to contact this poster with services or other commercial interests montana