I have the blue driver reader and have been happy with it. It connects to a phone through blue tooth. It can read codes, does live data for rpm, speed, sensors, etc. It can record data to help troubleshoot/recreate problems.
I bought this to replace the one I had on a laptop that died. Bluetooths to your phone.
Like most things now days it’s capable of way more than I’ll ever use it for.
The MS309 CAN OBDII/EOBD code reader provides DIYers easy andquick access to diagnostic trouble codes and their definitions on all OBDllcompliant vehicles sold worldwide since 1996. Itis the best solution to diagnose all 1996 and newer OBDIcompliant vehicles!