These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. ACER EI491CR MONITOR CABLES YS8A10E2 / 15146A. Please verify that your board part number is the same as YS8A10E2 / 15146A. 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)