"Easy to Use:Shake the Toner Cartridge from side-to-side to distribute the tonerRemove the Protective CapInsert toner Cartridge into the Printer Accurate Toner Levels: Each cartridge will fully read accurate toner levels on your printer High Performance: When you need to print pages with clear and crisp text, GTS cartridges provide you high quality Toner/Ink cartridges Reliability: Each Ink/Toner cartridge is methodically tested by our Technical Testing team to ensure 100% compatibility and reliability Will this product void my printer's warranty? Purchasing compatible replacement cartridges/drum/Ink units from us will NOT void your printer's warranty. Our Commitment: 100% Quality and Satisfaction Guaranteed! We do appreciate and encourage all our customers to contact us first. We believe good communication will resolve any issues. Your satisfaction is our first priority. "