Anonymous posted an answer for this HP DeskJet 940c InkJet Printer:
"Your printer software should detect it if you installed it."
Anonymous posted an answer for this HP DeskJet 940c InkJet Printer:
"It goes in the smaller envelope feed slot on top right side of the plast flap and is..."
Anonymous posted an answer for this HP DeskJet 940c InkJet Printer:
"Print a test page only in black. If little to no black shows, you need a black. If your..."
Anonymous posted an answer for this HP DeskJet 940c InkJet Printer:
"You most likely need a new black HP 15 cartridge."