Compatible with Pro 400 series This fuser assembly is designed specifically for Pro 400 M401dn/dne/dw/n and M425 series printers, providing a seamless replacement for original units RM18808 and RM18809, with consistent print density and durability. Easy direct replacement No drivers or calibration required; this fuser assembly is a direct replacement for older units, compatible with systems 10/11 and the latest versions, simplifying your printer maintenance process. Longlasting performance Lifespan up to 50,000 prints; resistance to wear; delivers 30% longer service life compared to thirdparty components for reliable operation. Safety features included Builtin overheating protection circuit automatically powers off the unit to prevent risks, safe usage during extended printing. Use scenarios volume office printing: worn fusers to maintain consistent print density and reliability during peak workloads. Routine maintenance in multiuser environments: direct replacement minimizes downtime and simplifies service procedures. Extended production runs: safety features help protect the printer during long print jobs while preserving output quality.