HP 508A Magenta Toner Cartridge (5,000 pages) for HP Color Laserjet Enterprise M552 Colour, Color Laserjet Enterprise M553 Colour, LaserJet Enterprise M577 Printers. From the first print until the last, the 508A Magenta Toner Cartridge (5,000 pages) (CF363A) from HP can help office a consistently high level of print performance. Incredibly simple to install and capable of achieving a surprisingly high yield for a toner of such modest price and size, this toner cartridge can help offer a professional edge to all prints – whether you’re printing at the office.