Genuine OEM HP Deskjet 3720 Ink and Supplies

The HP Deskjet 3720 uses HP 65 black and tri-color ink, with HP 65XL choices for more pages between cartridge changes. Black and color are separate, so you can choose the capacity that fits how quickly each cartridge runs low.

Toner Buzz carries genuine HP 65 and HP 65XL cartridges for the 3720 as singles, a black twin-pack and a black-and-color pack. Choose one cartridge when only black or color needs attention, the twin-pack for extra black ink, or the combo when both are due.