CLJ 4550 dn / CLJ 4550-dn / CLJ 4550dn / CLJ-4550 dn / CLJ4550 dn / CLJ4550dn / Color Laser Jet 4550 dn / Color Laser Jet 4550-dn / Color Laser Jet 4550dn / Color Laser Jet-4550 dn / Color Laser Jet4550 dn / Color Laserjet 4550 dn / Color Laserjet 4550-dn / Color LJ 4550 dn / Color LJ 4550-dn / Color LJ 4550dn / Color LJ-4550 dn / Color LJ4550 dn / ColorLJ4550dn