Important Highlights about Wintone Laser Toners Cartridges ➧ Filled with maximum ink capacity,save on printing costs excellent printing performance. ➧ The right choice for your printer, to ensure that your machine keeps printing smoothly and clearly at all times. ➧ All toner cartridges with a 100% pressure test deliver exceptional print results. ➧ The user-friendly packaging design makes the use and installation of cartridges easy. ➧ Toner cartridges are new and are non-refillable. Why Wintone:1. ENVIRONMENTAL FRIENDLY: Using recyclable material and innovative technology to produce long-lasting and stable printing product. 2. 100% QUALITY TEST: A series of professional quality test to ensure compatible printers perfectly. 3. HIGH PRINTING PERFORMANCE: Our HP 55A CE255A toner cartridges help you reduce the printing cost while delivering bright colors and sharp text to satisfy your needs. Wintone Laser Toners Cartridge Simple Installation:Step-1 Unpack the new toner cartridge. Step-2 Gently shake the cartridge from side to side to distribute the toner evenly. Step-3 Take off the protective buckles in both side. Step-4 Pull out the sealing tape completely. Step-5 Remove the orange plastic shield and install the cartridge into the printer. TIPS:1. Please double check your printer model before placing order. 2. Since this is a compatible product, the computer may appear Non-Genuine, click "OK" and the printer can go on printing. 3. If the Toner Cartridge cannot be recognized by your printer, please turn off 30 second then turn on and install it again, if it still doesn’t work, you can try to take it out and use tissue with rubbing alcohol to clean the chip softly. Normally it works.