Restore Disk for Tecra A2 Series, Model/Part # must match the following : PTA20U-?????? (???'s can be ANY letter or number). This is a copy of the original Toshiba Recovery DVD for this model with Windows XP Pro pre-installed. If you have any questions please ask before buying. You MUST provide a full model/part number and serial number with your order to verify the DVD will work with your machine, otherwise no refunds will be given for incorrect items.