That card doesn'y really tells you whar parts are fried. It translates the POST beeps when the system boots, into two-digit alphanumeric code. And, comes with a printed chart that tells you in English what's wrong. It is very useful when a system doesn,t boot up correctly and you suspect that it is the CPU, mobo or RAM. It's very helpful when you need to save some time. I own one I recommend it, only if you're going to work with many computers.