These boards have been removed from mostly new MONITORS with broken screens and should work if properly installed. MSI OPTIX MAG270CR MONITOR LED MODULE 06-M27G1-12S4P-4012-L-191212, 06-M27G1-12S4P-4012-R-191212. Please verify that your board part number is the same as 06-M27G1-12S4P-4012-L-191212, 06-M27G1-12S4P-4012-R-191212. 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)