Original HP 305X / 305A CMYK Multipack Toner Cartridges (CE410X / CF370AM)
Original HP 26A Black Toner Cartridge (CF226A)
Amazon.com: HP 305X Black High-yield Toner Cartridge | Works with HP LaserJet Pro 300 M351, HP LaserJet Pro 300 MFP M375, HP LaserJet Pro 400 M451, HP LaserJet Pro 400 MFP M475
HP 305X/305A Full Set Original Toners - Printerinks.com