Compatible HP printer models:
DeskJet: DeskJet, Plus, 400, 400L, 420C, 450, 500, 500C, 510, 520, 540, 550C, 560C
DeskWriter: C, 510, 520, 540, 540C, 550C, 560C
DesignJet: 200, 220, 600
Fax: 200, 300, 310, 700, 750, 900, 950
OfficeJet: LX, 300, 330, 350
Compatible Apollo by HP models:
P-1200, P-1220 Barbie, P-1250i