These are older LCD adapter boards for Ramps 1.4 boards included with some LCD orders from the factory, while needed to connect the LCDs to Ramps 1.4 boards, they have no use on any recent board like Creality, MKS, or BigTreeTech.
Once you have correctly fitted the adapter PCB to the 12864 LCD as shown below please check the cable orientation article here: 12864 LCD Cable Connections – Correct and Incorrect Connection Pictures The adapter PCB connects to the EXP1 header on the LCD in the direction shown below for the Correct LCD Adapter Orientation. Ignore any […]