Quote from: xlibman on August 25, 2017, 03:56:11 AMHow do I know if I have the Plus module attached to my calculator?
You will have to buy a Silverlink USB cable from Texas Instruments, preferably on Ebay or something if it's cheaper there.
You cannot upgrade your TI-92, though, unless you got the very rare Plus module attached to your calculator, which basically turns your TI-92 into an hardware revision 1 of the upgradeable TI-92 Plus. All you can do is transfer TI-92 files.