1. Need OEM Chip: This toner cartridge DOES NOT include the chip, you have to re-use the chip from the H P original toner that was used up in your printer. Item content: 1 Pack 134X W1340X ( 134A W1340A ) Compatible Toner Cartridge Black NO CHIP, with Professional Tools.2. Page Yield: High capacity 2400 pages black at 5% coverage, A4 paper, letter. (ISO/IEC standard).3. Compatible with printers: Compatible for M209 M209dw M209dwe MFP M234 M234dw M234dwe M234sdwe M234sdw M234sdn M234sdne printers.4.ISO Quality Factory: Our toner cartridges are manufactured with new components and are manufactured in the factory that meets ISO 9001 quality management, ISO 14001 environmental management and ROHS environmental standards. We specialize in producing compatible toner cartridges with 20 years of technical experience.5.Outstanding print quality: we use durable OPC drum，quality toner powder, stable magnetic roller, high-end charge roller, and robust blade to ensure stable and sharp imaging.