compaq laptop(you can put it on a PC too) win"95 quick restore and works only on a compaq and not the newer ones I suspect. Does work of 98 models but of course only some of the drivers. Has a seriel number(obscured by the corn chip there) that has to be entered when you are loading the disk. It is now someone esle's seriel number but on a very out of date and not a security risk, operating system. If you use this on a PC, the windows that the operating system displays are of muted, low power coloring as to save battery life. Point is many of these being sold, do not have a seriel number with them and I may use this number myself again, you will be sharing it as 95 is no longer functional on the internet anymore, Compaq does not exist anymore, just HP.