📊Product Information: OFFICEFLOW 134A High Yield Toner(with chip) Cartridge Compatible with for W1340A W1340X M209dw M234dw M234sdw M234sdn Printers 🖨️ Compatible Printer Models: Compatible forHP Laser jet M209dw MFP M234dw M234sdn M234sdw NOTICE: NOT COMPATIBLE WITH M209dwe M234dwe M234sdwe M234sdne (Please confirm your printer model before placing the order.) 📄High Page Yield: up to 1100 pages per 134A Black ink cartridge, (5 percent coverage of letter A4); 📦Packing list: 2 x 134A Black Toner Cartridge; ⚙️Simple Installation Guide: Step 1: Gently rock toner side‑to‑side 5‑6 times for even toner distribution. Step 2: Peel off protective covers, secure toner into your matching drum unit (Drum unit not included). Step 3: Insert full assembly into printer and close front cover. Why choose OFFICEFLOW: ① Excellent Printing Performance: Uniform toner output delivers sharp black texts while reducing background smudges, great for daily home and office document printing. ② Great Cost Performance: Reasonable price and reliable quality help you cut down daily printing expenses. ③ Wide Compatibility: Fully compatible with Brother printers, equipped with latest updated chip, easy installation and stable operation without errors. ④ Reliable after‑sales support: Our customer support replies to all questions patiently and promptly, offering professional guidance to solve your usage issues.