Brother B521116-2 is a replacement circuit board (PCB) from Brother Industries, Ltd., identified by the part number B521116-2 for Brother CNC equipment. In current listings, the board is described as a CNC PCB and shows an IH designation, with a flammability rating of T-D94V-0 and the internal reference 8808071A. This part is sold as a spare PCB for compatible Brother CNC systems rather than a complete machine component.
