Compatible Printers: Compatible with M209dw MFP M234dw M234sdw M234sdn Printer

Note: Incompatible suffix with the letter "e", such as Pro 209dwe 234sdne 234sdwe 234dwe printer

With Latest Chips: Equipped with chip, these 134X toners can be directly installed into the printer for use

High Page Yield: Up to 2500 pages for 134X W1340X black toner cartridge (Letter/A4, at 5% Coverage)

Package Contents: 2 Packs 134A Toner Compatible for HP 134A W1340A 134X W1340X Toner, and Upgrade Device (Non-OEM ink cartridges often cannot work due to automatic printer firmware upgrades. Our Upgrade Device is designed to solve this problem. in case there is a firmware upgrade, then take it out)