HP 21 Inkjet Cartridge - Black INR 1, 640 Description Ink Colour Black Page Yield 190 Compatible Devices HP Officejet 4355 All-in-One Printer(Q8091A), HP Deskjet 3940 Color Inkjet Printer(C9050A), HP Deskjet F4185 All-in-One Printer(CB585A), Printer, HP Deskjet F380 All-in-One Printer(Q8134A)HP Officejet 4355 All-in-One Printer(Q8091A), HP Deskjet 3940 Color Inkjet Printer(C9050A), HP Deskjet F4185 All-in-One Printer(CB585A), Printer, HP Deskjet F380 All-in-One Printer(Q8134A)