For fantastic colour and crisp text from your Samsung CLP-300 laser printer, choose a genuine Samsung Magenta Toner Cartridge (CLP-M300A/ELS). When you see a blinking red light on the magenta toner indicator on your printer's control panel, the corresponding toner cartridge is running low. Install a replacement magenta cartridge as soon as possible to resume printing. This standard yield toner cartridge is packed with enough toner to print 1,000 pages.