Small, medium and large companies requiring high-volume, reliable network and workgroup printing with minimal user intervention. Enjoy the legendary quality and reliability of HP LaserJet printing with the HP 42 LaserJet Toner Cartridge. HP’s Smart Printing technology[1] and advanced toner formula makes sharp, professional printing easy and reliable for an excellent value.Compatible Printers: HP LaserJet 4350 TN, HP LaserJet 4350 DTNSL, HP LaserJet 4350 N, HP LaserJet 4350 DTN, HP LaserJet 4250, HP LaserJet 4250 DTN, HP LaserJet 4250 TN, HP LaserJet 4250 DTNSL, HP LaserJet 4350, HP LaserJet 4250 N, HP LaserJet 4350 Series, HP LaserJet 4250 Series, HP LaserJet 4240 N