This driver is used with an ancient scanner, the whole tp has to move and it is massive. The driver has many options, it's own diagnostics etc. but the card is rather picky as to the settings that are used to make it work. It is better that you have the manual with you when you are trying to get this card to work in you machine. Also it is better to run it on something that is really old like a 80286 or an 80386, it prefers one that is slower so that it can keep up.