HP Laserjet 4250 series duplex unit Q2439B R73-5047, RL1-0488 12 Month Warranty
HP LASERJET 4250 SERIES DUPLEX UNIT. LASERJET 4200/4250/4300/4350. Duplex has been dismantled and thoroughly cleaned. THIS LEAD IS REQUIRED FOR DUPLEX TO WORK CORRECTLY. ENABLE YOUR HP PRINTER TO PRINT DOUBLE SIDED.