If you want to program 16-bit 27C400 ROMs like #Kickstart ROMs or #vintagemac ROMs, the #TL866-II programmer is out of production and all sellers sell the #XgecuT48 instead. Even if they claim that it's the TL866-II, it isn't and you'll most likely get a black T48 instead.

The T48 is not compatible with the adapters sold for the TL866-II, it's wired differently and the socket is the other way around.

Luckily now there is an adapter for the T48 also:
https://www.gotek-retro.eu/t48-eprom-adapter/

#RetroComputing