These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. MSI OPTIX-MAG27CQ MONITOR BUTTON BUTTON 6502K24G100020 / MG24G1-KEY-A12-170713. Please verify that your board part number is the same as 6502K24G100020 / MG24G1-KEY-A12-170713. The part number is the first number left of the /, or the sole number listed. Most often written in title as (part number / board number)