Toner for Laser Printer: HP Color LaserJet 4650 series, HP Color LaserJet 4600, HP Color LaserJet 4600 DN, HP Color LaserJet 4600 DTN, HP Color LaserJet 4600 HDN, HP Color LaserJet
From Amazon
HP C9720A 641A Original LaserJet Toner Cartridge, Black, Pack of 1
This product is also available at 3 unverified merchants.