1. [Quality Item] - 100% Original Brand New for HP Elitebook 840 G8 Non-backlit Keyboard Assembly Replacement Part. ^^ 2. [Compatibility] - Compatible for HP Elitebook 840 G8 ^^ 3. [ Manufacturer Part Number (s) ] - M36310-001 M52492-001 ^^ 4. [Warranty] -- F-HONG provide a 120-day warranty against any manufacturer defective such as dead-on arrival (DOA), lines, video failure, and backlight outage. ^^ 5. [Note] - Please check your model and compare the pictures for more details to ensure get the correct one! Please contact us if you have any question or problems!