The 26 print cartridge is compatible with the following HP printers.

HP Deskjet and Deskwriter printers
- Deskwriter C
- Deskwriter 510, 520, 540, 550, and 560 series
- Deskjet 400, 400L, and 420 series
- Deskjet 500, 540, 550, and 560 series

HP Fax
- FAX 200
- FAX 300, and 310
- FAX 700, and 750
- FAX 900 and 950

HP Officejet
- Officejet 300, 330, and 350 series
- Officejet LX