This 20N1HM0 Magenta High-Yield Return Program Toner Cartridge from Lexmark is compatible with CS331dw & CX331adwe Color Laser Printers and provides an approximate yield of 4500 pages. It utilizes an innovative shake-free system and provides excellent reliability and image quality. Additionally, the cartridge is eligible for Lexmark's Return Program, which lets you return the cartridge to Lexmark for remanufacturing or recycling.