Original HP 508X Black High-Yield LaserJet Toner Cartridge (CF360X)
Amazon.com: HP Original 508X Black High-yield Toner Cartridges (2-pack) | Works with Color LaserJet Enterprise M552, M553, Color LaserJet Enterprise MFP M577 Series | CF360XD : Office Products
Compatible HP CF380X-312X Laser Toner Cartridge (4,400 page yield) - Black | POSPaper.com
CF360X HP #508X Black Original Toner Cartridge – ParNet