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This is my Foxwell NT520 PRO with BMW software and it reads early BMW cars E30/E36 including Z3.
Why not speak to Gendan and tell them what you want to do and ask for their assurance that if you buy it from them, that it will work on your car? The set up shown on the Gendan advert only includes the OBD1 & 2 cable and not the one to fit the round socket in the engine bay like the one in my photo above. You will need this to read all the modules. I can't believe that Foxwell would remove the part of the program that reads the ADS.
Be aware that if you purchase this reader you may need to register it with Foxwell to download the software unless Gendan do it for you before they send it to you.
If you already have a "round plug" adapter it may plug into the OBD lead supplied with the scanner, but check before you buy. Gendan should be able to advise you.