HP LaserJet M601 / M602 / M603 / P4014 / P4015 / P4515 75-Sheet Auto Envelope Feeder (CE399A) 1-Year Warranty. This universal CE399A automatic envelope feeder works with the following models. Any HP Laserjet Enterprise 600 M601, M602 & M603 series printer as well as any HP Laserjet P4014, P4015 and P4515 series printer.
eBay