HP 11 Printheads is compatible with the following products:  
HP Business Inkjet 1200d Printer (C8154A)
HP Business Inkjet 1200dn Printer (C8170A)
HP Business Inkjet 1200dtn Printer (C8155A)
HP Business Inkjet 1200dtwn Printer (C8156A)
HP Business Inkjet 2300 Printer (C8125A)
HP Business Inkjet 2300dtn Printer (C8127A)
HP Business Inkjet 2300n Printer (C8126A)
HP Business Inkjet 2800 Printer (C8174A)
HP Business Inkjet 2800dt Printer (C8163A)
HP Business Inkjet 2800dtn Printer (C8164A)
HP Color Inkjet cp1700 Printer (C8108A)
HP Color Inkjet cp1700d Printer (C8106A)
HP Color Inkjet cp1700ps Printer (C8105A)
HP Designjet 100plus Printer (C7796C)
HP Designjet 110plus nr Printer (C7796E)
HP Designjet 110plus Printer (C7796D)
HP Designjet 500 24-in Roll Printer (C7769B)
HP Designjet 500 42-in Roll Printer (C7770B)
HP Designjet 510 24-in Printer (CH336A)
HP Designjet 510 42-in Printer (CH337A)
HP Designjet 70 Printer (Q6655A)
HP Designjet 800 Printer (24 in) (C7779B)
HP Designjet 800 Printer (42 in) (C7780B)
HP Designjet 800ps Printer (24 in) (C7779C)
HP Designjet 800ps Printer (42 in) (C7780C)
HP Designjet 815mfp (Q1279A)
HP Designjet 820 MFP (Q6685A)
HP Officejet 9110 All-in-One Printer (C8140A)
HP Officejet 9120 All-in-One Printer (C8143A)
HP Officejet 9130 All-in-One Printer (C8144A)
HP Officejet Pro K850 Color Printer (C8177A)
HP Officejet Pro K850dn Color Printer (C8178A)