Genuine OEM HP PhotoSmart Premium - C309c Ink and Supplies
The Photosmart Premium C309c has five separate HP 564 ink positions, including main black and photo black. Those black cartridges are distinct supplies, while cyan, magenta, and yellow can each be changed independently.
At Toner Buzz, genuine HP 564 options for the C309c include standard and XL singles, color packs, a four-color XL set, and a standard black two-pack. Pick the named black for the correct position, a single for one low ink, or a pack that matches the colors you need.