Genuine OEM HP DesignJet Ink and Supplies

The HP DesignJet category lists HP 45 black ink under two product codes. Check whether you need the item labeled C6650FN or the one labeled 51645A.

Toner Buzz carries genuine HP 45 black ink. Both listed products are black supplies, so use C6650FN or 51645A to identify the item you need.

Guaranteed fit for HP DesignJet

The products below are genuine OEM HP Supplies made for the HP DesignJet.

  • OEM HP Supplies
  • Fits HP DesignJet
  • 2 products for this printer

Standard Yield Products

Why Shoppers Choose Toner Buzz

178K+ orders shipped nationwide

58K+ happy customers served

5-star rating based on 14,000+ reviews

17+ years in business