HP R73-5055 p4014 p4015 p4515 CB519A Auto Duplexer Duplex Unit
HP® 64A Black LaserJet Toner Cartridge (CC364A) - $213.99
Duplexer Duplex Unit R73-5055 RL1-1669 CB519A for HP LaserJet P4014 P4015 P4515 | eBay
Amazon.com: HP CB388A Maintenance Kits Compatible Replacement by Printel (110V) for HP Laserjet P4014, Laserjet P4015, Laserjet P4515, with RM1-4554-000 Fuser Included : Office Products