DO NOT UPGRADE: Disable automatic updates and avoid manually triggering upgrades to reduce firmware upgrade risks NOTICE: Not compatible with E-series printers, like M234dwe M234sdne M234sdwe printer/ Message of “Cartridge Low” might be popped up every time you start printing, please ignore it since we are applying transferred chip/ Cartridge might not be able to show the print pages NOTICE: Printer may show error messages to discourage users from using 3rd party toner, just please press "OK" button or ignore it to continue printing Compatible Printers: Works for MFP M234dw M234sdn M234sdw printer What's in the box: 2 packs of 134X black high-yield toner cartridges Package Contents:
2 Pack 134X Toner Cartridge

Compatible with These Printers:
MFP M234dw M234sdn M234sdw printer

Page Yield:
Up to 2,400 pages per W1340X black Toner cartridge at 5% coverage in A4

Color of Toner:
2 packs of 134X Black High Yield Toner

Excellent performance:
non-toxic harmless
Provide always clear and professional images
Strict testing to ensures continuous and stable printing performance
Excellent printing effect to meet all your printing needs