4PK Black Toner Cartridge for HP 87A CF287A Color LaserJet Pro M501 M501n M501dn | eBay
HP® LaserJet Pro Printer - M501DN (J8H61A#BGJ)
Black High Yield Toner Cartridge Compatible with HP LaserJet Pro M501dn (N2871)
HP® LaserJet Pro Printer - M501DN (J8H61A#BGJ)
Amazon.com: (Pack of 1) Compatible for HP 87A hp87A 287A CF287A Toner Cartridge (1-Black, HP287A) Replacement for Enterprise M506 M506dn M506x M506n M501dn M501n MFP M527dn M527z Printer, Sold by GTS :
Compatible Hp 87a Cf287a Black Laser Toner Cartridge 287a 9000 Pages For Hp Laserjet Pro M501 Enterprise M506 Mfp M527 Series - Toner Cartridges - AliExpress