@neauoire Looks like that's the C-MAP NT Max (or Max Wide maybe?) series. Welcome to the wonderful world of cartography DRM, where there's a several-pages-long PDF compatibility guide of what plotters will accept which carts... https://www.kmes.co.uk/download/c-map_compatibility.pdf
Anyway looks like NT MAX and NT+ are both plentifully found on the 2nd hand market whenever you need them, that's cool! :) glad that plotter found a good new home!