The adapter bypasses region lock chip on Super Nintendo and Super Famicom consoles, it lets you run games from any country on any console. 

Beware, this adapter will not change your console region between PAL and NTSC, it only disables checking for region lock chip, some games still have additional video mode check and will not play in the incorrect mode, that cannot be bypassed by any current methods.
You can test compatibility using zsnes emulator (dos version runs on windows 10), it lets you test games in both regions, simulating a region bypass adapter. 

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