Genuine OEM HP LaserJet P4014 Toners
The HP LaserJet P4014 uses HP 64A black toner, with maintenance kits ordered separately. For maintenance, voltage matters: CB388A is the 110V kit and CB389A is the 220V version, so they are not interchangeable choices.
Toner Buzz carries genuine HP 64A toner and both maintenance-kit versions. Choose 64A for toner, and match the CB388A or CB389A kit to your printer's voltage when arranging maintenance.