These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. ACER PE320QK MONITOR BUTTON BUTTON 715G8826-K0B-000-004I. Please verify that your board part number is the same as 715G8826-K0B-000-004I. 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)