Apple used to offer two different toner cartridges for the LaserWriter Pro 810. The original LaserWriter Pro 810 Toner Cartridge (M1853G/A) is no longer available. This cartridge used a larger average toner particle size of 11 microns which although less expensive did not provide as much detail as the newer Extended Capacity Toner Cartridge. The original toner cartridge can be identified by the white product label on the top of the cartridge.
Apple currently offers only the newer LaserWriter Pro 810 Extended Capacity Toner Cartridge (M3602G/A) which uses an average toner particle size of 7 microns. The extended capacity toner cartridge minimizes ghosting problems and yields a higher apparent resolution due to the smaller toner particle size. It can be identified by a pale yellow label on the top of the toner cartridge.