Replacement Toner Cartridge with Chip for HP 134A W1340A 134X W1340X — Compatible with Laser 209dw MFP, M234dw, M234sdn, M234sdw (Black)

DO NOT UPGRADE: Disable automatic updates and avoid manually triggering firmware upgrades to reduce the risk of incompatibility. NOTICE: Not compatible with E-series printers — for example M234dwe, M234sdne, M234sdwe. A message saying "Cartridge Low" may appear each time you start a print job; please ignore this alert because a transferred chip is installed. The cartridge may not be able to display printed page counts. The printer may also present error or warning messages intended to discourage third‑party supplies; simply press "OK" or dismiss the notice to continue printing. Compatible printers: M209dw MFP, M234dw, M234sdn, M234sdw. What's in the box: 2 packs of 134A mfp m234dw toner (Black). Wide Page Yield: Up to 1,100 pages per W1340A black toner cartridge at 5% coverage in A4. 134A black toner cartridge: Replacement for 134A / W1340A toner cartridges with chip; also compatible with 134X / W1340X toner cartridges.