HP 940XL High Yield Ink Cartridge Black (CH633BN) Cartridge Specification: 2- Black High Yield Ink Cartridge: Page yield approx. 2,200 pages¹ each Machine Compatibility: OfficeJet Pro: 8000 (A809a, A809n, A811a), 8500 (A909a, A909n, A909g), 8500A (A910a, A910g, A910n) ¹Actual yield depends on specific use including images printed, printer, print settings and other factors.HP