What is/are in the package? 4-Pack 204A CF510A +CF511A +CF512A +CF513A Toner Cartridge How many pages do these print up to? up to CF510A Black Toner Cartridge 1,100 pages and CF511A Cyan CF512A Yellow CF513A Magenta 900 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 Color Laser Jet Pro MFP M154 M154a M154nw M180n M180nw M181 M181fw Printer GTS offers money back warranty on defective toner cartridges 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.