What Ink Does the HP OfficeJet Pro 8620 Use?

Last updated: September 25, 2026.

Quick answer: The HP OfficeJet Pro 8620 uses four cartridges: HP 950 black plus HP 951 cyan, magenta and yellow, or the high-yield 950XL/951XL versions (about 2,300 black and 1,500 color pages). Castle Ink's remanufactured 950XL black is $17.95, 951XL colors are $14.95 each, and the 950XL/951XL 4-pack is $59.95.

What Ink Cartridges Does the HP OfficeJet Pro 8620 Use?

Yields are the manufacturer's ISO estimates at about 5% coverage; photos and heavy graphics use more ink. Castle Ink prices checked September 2026.

Which Printers Use the Same Ink as the OfficeJet Pro 8620?

HP 950/951 cartridges fit a whole generation of OfficeJet Pro printers: the 8100, 8600, 8600 Plus, 8610, 8615, 8620, 8625, 8630, 8640 and 8660, plus the OfficeJet Pro 251dw and 276dw. See what HP printers use 950 and 951 ink. Look up any model in our find ink by printer directory.

What Is the Cheapest Ink for the OfficeJet Pro 8620?

Remanufactured 950XL/951XL cartridges are the cheapest reliable option, and this family has some of the biggest savings anywhere. HP no longer sells these cartridges on its own store; in our August 2026 Printer Ink Price Index, retail prices were about $72 for a 950XL black and $52 per 951XL color. Castle Ink's remanufactured 950XL is $17.95 and 951XL colors are $14.95, roughly 75% less, which works out to under 1 cent per black page.

Should I Buy HP 950/951 or 950XL/951XL?

XL, almost always. The 950XL black prints over twice as many pages as the standard 950, and 951XL colors about twice as many as standard 951s, for a much lower cost per page. These printers are built for office volumes, so XL cartridges rarely sit long enough to dry out.

How Do I Replace the Ink in the HP OfficeJet Pro 8620?

1. Turn the printer on and open the ink cartridge access door; wait for the carriage to move to the center and stop.
2. Press the front of the empty cartridge to release it and pull it out.
3. Unwrap the new cartridge, holding it by the sides (don't touch the contacts), and slide it into its color-coded slot until it clicks.
4. Close the access door. The 950/951 system uses a separate, permanent printhead, so the printer may run a short priming or alignment routine.

Will Remanufactured Ink Work in the OfficeJet Pro 8620?

Yes, with two caveats. HP pushes "dynamic security" firmware updates that can block cartridges with non-HP chips, so turn off automatic firmware updates in the printer's settings or the HP Smart app before switching. And if the printer is enrolled in HP Instant Ink, it only accepts subscription cartridges until you cancel. See how to stop HP firmware updates from blocking your ink. Using third-party ink does not void your warranty (here's why).

Why Does My OfficeJet Pro 8620 Say the Cartridge Isn't Recognized?

Remove the cartridge, make sure all protective tape and caps are off, wipe the chip or copper contacts gently with a dry lint-free cloth, and reinstall until it clicks. Confirm the part number matches this printer, then restart. If the message started right after a firmware update, the update may be blocking third-party chips. Full steps: ink cartridge not recognized.

How Do I Fix Streaky or Faded Prints on the OfficeJet Pro 8620?

Open HP Smart (or the printer's Tools/Printer Maintenance menu) and run Clean Printhead, then print a quality report. One or two cycles usually clear minor clogs. See faded or streaky prints.

What Are the HP OfficeJet Pro 8620's Key Features?

The OfficeJet Pro 8620 is a small-business 4-in-1 (print, scan, copy, fax) with automatic two-sided printing, a 50-sheet automatic document feeder, a large color touchscreen, and Wi-Fi and Ethernet networking.

Is the OfficeJet Pro 8620 Still Worth Using in 2026?

Usually, yes. These OfficeJet Pro models are durable, and 950/951 cartridges are cheap in remanufactured form. The one weak point is the separate printhead: if you see "Printhead Missing or Failed" and reseating it doesn't help, replacing the printhead often costs about as much as a new printer. Compare current models in our printer buying guide, or take the ~60-second PrinterIQ Finder quiz.

For drivers and the manual, visit the HP OfficeJet Pro 8620 support page.

HP OfficeJet Pro 8620 Ink FAQs

What ink does the HP OfficeJet Pro 8620 use?

HP 950 black and HP 951 cyan, magenta and yellow cartridges, or the high-yield 950XL and 951XL versions.

Can I mix HP 950 and 951XL cartridges?

Yes. Standard and XL cartridges fit the same slots, so you can mix sizes freely.

Why does my printer say "Printhead Problem" after changing ink?

Turn the printer off, open the access door, lift the printhead latch, remove and reseat the printhead, then close the latch and restart. If the error persists, the printhead may need replacing.

Will HP 952 or 902 cartridges fit?

No. Those belong to newer OfficeJet Pro models and won't fit the 950/951 series.

Can I print with a color cartridge empty?

No. All four cartridges must contain ink for the printer to work.

Are remanufactured cartridges safe for the OfficeJet Pro 8620?

Yes, from a reputable seller. See are compatible ink cartridges safe?

Related guides: OfficeJet Pro 8615 | 8620 | 8625 | 8630 | 8610

Need help choosing? Contact us with your printer model. Orders placed by 4 PM ET Monday–Friday ship the same day, with free shipping over $50.

About the Author: William Elward is the founder of Castle Ink and has been writing about printers, ink cartridges and printing technology for over 20 years.