The Tray 2/3 Separation Roller Assembly (RM2-5745-000CN) is designed to maintain efficient paper handling in HP LaserJet Pro printers, including models M402dn, M402dw, M402n, M403dn, M403dw, M501dn, M501n, and the MFP series M426dw, M426fdn, M426fdw. This roller assembly ensures that each sheet is accurately fed from the paper tray into the printer, preventing multiple sheets from feeding at once and reducing the risk of paper jams.