Laser Tek Services Compatible HP 201X Toner Cartridge Replacement for the HP CF400X. (Black, 4-Pack) Package contains 4 CF400X Black High Yield Compatible Replacement Toner Cartridges. Page Yield: 2,800 pages @ 5% page coverage. Works in the following printer models: HP Color LaserJet M252dw, HP Color LaserJet MFP-M277dw, HP Color LaserJet Pro M277n. Product Comes with a 1 year 100% Satisfaction Guarantee and all of our cartridges and drums are made at an ISO-9001 certified factory so you can expect premium quality. Laser Tek Services offeres free technical support for any questions you may have on our Products.