I could swear I had read a discussion here some time ago about there being two versions of the first TI Home Computer, the TI-99/4 but can't seem to find it anywhere. I am asking because I've recently gotten a hold of one of these, but am waiting on a cable to arrive in order to hook it up to a modern display in order to find out if it even still works. I'm just curious to know what was different between the two if indeed there were two versions of it. Unfortunately the one in my possession had the serial number scratched off of it so it may be impossible to determine which one I have. I think it would be based on the serial number matching up to the production run. Regardless, if someone could confirm or deny that there were two different 4's, I'd greatly appreciate it.