LEGO 53788 4520887 Very Light Bluish Gray Mindstorms NXT - Complete Brick with Dark Bluish Gray Base | electricBricks : LEGO set and parts shop and database
NXT downloads – LEGO Education
Lego Mindstorms NXT - Wikipedia
EV3 and NXT: Difference and Compatibility – Robotsquare
Sets that have 53788: Electric Mindstorms NXT (Complete Assembly)