This 20N10M0 Magenta Return Program Toner Cartridge from Lexmark is compatible with the CS331dw, CX331adwe, CS431dw, and CX431adw Color Laser Printers and provides an approximate yield of 1500 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.