These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. ACER SA230 MONITOR BUTTON BUTTON R3527-0012-0156 / 0171-1771-3082. Please verify that your board part number is the same as R3527-0012-0156 / 0171-1771-3082. 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)