Hewlett Packard 21 Black
Compatible with the following machines:
HP DESKJET:
1402, 1410, 3920, 3940, D1360, D1460, D1550, D1560, D2360, D2460, F370, F380, F2120, F2179, F2180, F2235, F2275, F2276, F2280, F4185
HP OFFICEJET:
4355
HP PSC:
1400 Series.