HP Upgrade Kit
C4101A
is compatible in the following HP Models:
HP LaserJet 5 Printer series
HP LASERJET 5SI MX PRINTER - C3167A
HP LASERJET 5SI NX REMARKETED PRINTER - C3166AR
HP LASERJET 5SI PRINTER - C3166A
HP LASERJET 5SI REMARKETED PRINTER - C3167AR