These printers are compatible with the C4127A/X toner cartridge

CANON LBP 1760
HP LaserJet 4000
HP LaserJet 4000 N
HP LaserJet 4000 NT
HP LaserJet 4000 T
HP LaserJet 4010
HP LaserJet 4050
HP LaserJet 4050 N
HP LaserJet 4050 SE
HP LaserJet 4050 T
HP LaserJet 4050 TN