Cool Toner CF400X-S-4A-Z-VC Compatible Toner Cartridge Replacement for 201X Cf400X Cf401X Cf402X Cf403X Cf400A Toner Cartridge (4 Pack) Support - advanced technology ensures stunning performance Service - Phone services for technical support Warranty - 3-years warranty; Replacement or Refund upon request HIGH YIELD - Cartridge Yield: 2800(black) and 2300(color) MODEL - Compatible Printer Model ---Color LaserJet Pro M252dw/M252n, Color LaserJet Pro MFP M277dw/M277n Vibrant and accurate color Clear and precise printing Consistent performance