What is/are in the package? 1-Pack 87A CF287A Toner Cartridge How many pages do these print up to? Each prints up to 9,000 pages based on 5% coverage (Standard Yield) How do you install the toner cartridge? ?Remove the orange cover ?Pull out the plastic tag (where you see the orange ring) which is on the side of the cartridge, if applicable ?Insert into the printer ?Enjoy printing! What are the compatible printers? HP Enterprise M506dn/M506n/M506x Printers HP Laser Enterprise MFP M527z/M527f/M527dn Printers HP Laser Pro M501dn Printers What is the warranty? GTS offers money back warranty on defective toner cartridges What is the shelf life? Please store the unused/unopened toner cartridges in a dry and cool place. Avoid sun exposure Have a question or a problem? Please do not hesitate to contact us, our Customer Services Team will usually response your email or message within 1-2 business days.