Just a heads up concerning a high quality ELM327 adapter I'd recommend one of these:
https://www.totalcardiagnostics.com/elm327/
They're NOT cheap or as cheap as you can find but they're a far sight better and hence more reliable than most you'll find at lower prices. I had an Amazon piece but my laptop running W7 at the time just couldn't/wouldn't recognize it. Installing the one above it was immediately detected and I could proceed.
In all fairness others seem to go quite well with the "cheap" versions but know the quality of your ELM might make a difference whether it's easily discoverable and effectively interfaces with your laptop etc.
HTH