HP Paper (Glossy) Q2421A is compatible in the following HP Models:

HP LaserJet 9000 Printer series

HP LASERJET 9050 PRINTER - Q3721A
HP LASERJET 9050DN PRINTER - Q3723A
HP LASERJET 9050DN REFURBISHED PRINTER - Q3723AR
HP LASERJET 9050N PRINTER - Q3722A
HP LASERJET 9050N REMARKETED PRINTER - Q3722AR

HP LaserJet 8000 Multifunction Printers series

HP LASERJET 8000 MULTIFUNCTION PRINTER BUNDLE - C7092B
HP LASERJET 8100 MULTIFUNCTION PRINTER - C8065A

HP LaserJet 4000 Printer series

HP LASERJET 4050 USB-MAC PRINTER - C7829B
HP LASERJET 4300 PRINTER - Q2431A
HP LASERJET 4300 PRINTER - Q2431V
HP LASERJET 4300 REMARKETED PRINTER - Q2431AR
HP LASERJET 4300DTN PRINTER - Q2434A
HP LASERJET 4300DTN REMARKETED PRINTER - Q2434AR
HP LASERJET 4300DTNS PRINTER - Q2435A
HP LASERJET 4300DTNSL PRINTER - Q2448A
HP LASERJET 4300DTNSL REMARKETED PRINTER - Q2448AR
HP LASERJET 4300N PRINTER - Q2432A
HP LASERJET 4300N REMARKETED PRINTER - Q2432AR
HP LASERJET 4300TN PRINTER - Q2433A
HP LASERJET 4300TN REMARKETED PRINTER - Q2433AR

HP LaserJet 4000 Multifunction Printer series

HP LASERJET 4100 MULTIFUNCTION PRINTER - C9148A
HP LASERJET 4100 REMARKETED MULTIFUNCTION PRINTER - C9148AR
HP LASERJET 4101 MULTIFUNCTION PRINTER - C9149A

HP LaserJet 4 Printer series

HP LaserJet 4p/mp Printer - C3134A

HP LaserJet 3000mfp/All-in-One Printer series

HP LASERJET 3300 MULTIFUNCTION PRINTER - C9124A
HP LASERJET 3300 REMARKETED MULTIFUNCTION PRINTER - C9124AR
HP LASERJET 3310 DIGITAL PRINTER COPIER - C9709A
HP LASERJET 3320 MULTIFUNCTION PRINTER - C9125A
HP LASERJET 3320 REMARKETED MULTIFUNCTION PRINTER - C9125AR
HP LASERJET 3320N MULTIFUNCTION PRINTER - C9151A
HP LASERJET 3320N REMARKETED MULTIFUNCTION PRINTER - C9151AR
HP LASERJET 3330 MULTIFUNCTION PRINTER - C9126A
HP LASERJET 3330 REMARKETED MULTIFUNCTION PRINTER - C9126AR

HP LaserJet 2000 Printer series

HP LASERJET 2100 PRINTER - C4170A
HP LASERJET 2100 REMARKETED PRINTER - C4170AR
HP LASERJET 2100M PRINTER - C4171A
HP LASERJET 2100M REMARKETED PRINTER - C4171AR
HP LASERJET 2100SE PRINTER - C4138A
HP LASERJET 2100TN PRINTER - C4172A
HP LASERJET 2100TN REMARKETED PRINTER - C4172AR
HP LASERJET 2100XI PRINTER - C4139A
HP LASERJET 2430N PRINTER - Q5964A

HP Color LaserJet 9000 Printer series

HP COLOR LASERJET 9500HDN PRINTER - C8547A
HP COLOR LASERJET 9500HDN REMARKETED PRINTER - C8547AR
HP COLOR LASERJET 9500N PRINTER - C8546A
HP COLOR LASERJET 9500N REMARKETED PRINTER - C8546AR

HP Color LaserJet 9000 Multifunction Printer series

HP COLOR LASERJET 9500 MULTIFUNCTION PRINTER - C8549A

HP Color LaserJet 5000 Printer series

HP COLOR LASERJET 5500 PRINTER - C9656A
HP COLOR LASERJET 5500 REMARKETED PRINTER - C9656AR
HP COLOR LASERJET 5500DN PRINTER - C9657A
HP COLOR LASERJET 5500DN REMARKETED PRINTER - C9657AR
HP COLOR LASERJET 5500DTN PRINTER - C9658A
HP COLOR LASERJET 5500DTN REMARKETED PRINTER - C9658AR
HP COLOR LASERJET 5500HDN PRINTER - C9659A
HP COLOR LASERJET 5500N PRINTER - C7131A
HP COLOR LASERJET 5500N REMARKETED PRINTER - C7131AR