With Built-In Chip: Compatible with HP 138X toner cartridges are designed with integrated chips, simplifying the setup process and eliminating the need to transfer old chips to the 138A 138X cartridges. Printer Compatibility: The 138X toner cartridge Compatible with HP LaserJet Pro MFP 3101fdw, Compatible with HP LaserJet Pro 3001dw High Page Yield: Up to 4,000 Pages for 138X Black Toner Cartridge (Letter A4, at 5% coverage) Package Contents: 2 x 138X W1380X Black High Yield Toner Cartridge Premium Quality: Our 2-Pack high yield 138X toner cartridges, along compatible with HP 138A 138X cartridges, deliver sharp text and vibrant colors, raising the bar for print quality standards Budget-Friendly: Our 138X black laserjet toner cartridge are more cost-effective than the original ones, helping you save a significant amount of money. Enjoy savings without compromising on quality 138X Black High Yield Toner Cartridge (with Chip) Compatible for HP 138X W1380X 138A Black Laserjet Toner Cartridge Work for HP LaserJet Pro MFP 3101fdw 3001dw Printer (2-Pack)