This is a brand - new, high - yield black toner cartridge. It's EXPRESSION brand and is fully compatible with Dell 1720 printers, offering a 6k yield for long - term use.

Using this toner is easy. First, make sure your Dell 1720 printer is turned off. Open the toner compartment, take out the old toner cartridge, and then insert this new one firmly. Close the compartment and turn on the printer. For best results, store the toner in a cool, dry place. Avoid exposing it to direct sunlight or extreme temperatures. If you notice any printing issues like streaks or faded text, you can try cleaning the printer's contacts. Also, don't shake the toner cartridge too vigorously as it may cause uneven printing.