Product type: connector board
Usage:connect the wires between mainboard and hotend
Compatible for: GT2560 V4.1B main board A10 PRO/ A10M/ A20/A20M Printer
GTM32_103_V1 control board A30 PRO /A30M Printer
before ordering , pls check if your printer extension board is same as this picture or not . we have different version.