All-IN-ONE cartridge PCB assembled and tested. Has Atari diagnostic software for, ST,STE,MSTE,TT,030. Also has the new RAM test software by chzsoft, and GEM BENCH 6 benchmarking software. Software is selected by jumper links on board. The settings for these are conveniently printed on the PCB itself.

I strongly recommend also buying a diagnostic cable to hook up your ST to your PC should there be no video output etc item #0191

NOTE: The cartridge is inserted as shown in the image (chip side up).