Genuine OEM HP Deskjet 3638 Ink and Supplies

HP 63XL ink for the Deskjet 3638 lasts for more printed pages than the standard-yield HP 63 version. That extra capacity is a separate choice for black and tri-color, so you can put it toward the ink you use more often.

Toner Buzz carries genuine HP 63 and HP 63XL supplies for the 3638, from single black or color cartridges to packs combining the two. Singles let you choose each ink's capacity; a black-and-color pack is a bundled order, not a requirement to change both cartridges at once.