This is an interesting little notebook with an external proprietary stiffy drive. The notebook is truly tiny but the amazing innovation is the butterfly keyboard which opens up and slots into place providing a much wider keyboard than the actual notebook itself. Truly an amazing engineering wonder to see in action. This unit is a 486DX 75Mhz with upgraded 11MB memory and 540MB hard disk drive and built in ESS 688 sound card. The passive LCD screen is in excellent condition with no damaged pixels. Given the small size of the unit the keyboard, once folded out, is very comfortable to work on.