These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. ACER ED273 MONITOR LED DRIVER BOARD DW270EC / CONVERTER-0B3363T-01. Please verify that your board part number is the same as DW270EC / CONVERTER-0B3363T-01. 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)