HP OfficeJet Pro 7740 Ink: HP 952 / 952XL Cartridges | Castle Ink
Last Updated:The HP OfficeJet Pro 7740 wide-format all-in-one uses HP 952 or HP 952XL ink cartridges. The 952 series ships in four cartridges — black, cyan, magenta, and yellow — with high-yield XL options that dramatically lower your per-page cost in this 11x17 office printer.
Ink Cartridges at a Glance
| Cartridge | Color | Approx. Page Yield |
|---|---|---|
| HP 952 Black | Black | ~1,000 pages |
| HP 952 Cyan | Cyan | ~700 pages |
| HP 952 Magenta | Magenta | ~700 pages |
| HP 952 Yellow | Yellow | ~700 pages |
| HP 952XL Black | Black | ~2,000 pages |
| HP 952XL Cyan | Cyan | ~1,600 pages |
| HP 952XL Magenta | Magenta | ~1,600 pages |
| HP 952XL Yellow | Yellow | ~1,600 pages |
The HP 952 family is also used in the HP OfficeJet Pro 7720, 7730, 8210, 8216, 8218, 8710, 8715, 8720, 8725, 8730, and 8740 — so if your office runs multiple HP Pro printers, you can often stock a single XL set.
Save on HP 952 Ink
Castle Ink’s compatible HP 952XL cartridges deliver the same yield as OEM at a fraction of the price — and every cartridge is backed by a 1-year quality guarantee.
How to Replace Ink in the HP OfficeJet Pro 7740
- Power the printer on and open the front access door.
- Wait for the carriage to slide to the center.
- Press down on the old cartridge to release it, then pull it straight out.
- Remove the protective tape from the new cartridge and slide it into the matching color slot until it clicks.
- Close the door and let the printer run its short alignment routine.
Troubleshooting Tips
"Cartridge problem" alert: Reseat each cartridge and wipe the gold contacts with a lint-free cloth.
Streaky prints: Run Tools > Clean Printhead from the 7740 touchscreen. Repeat once if streaks persist.
Alignment off: After installing a new cartridge, print an alignment page from Setup > Tools.
Firmware-blocked cartridges: HP firmware updates can sometimes reject third-party chips. If you use compatibles, disable automatic firmware updates in the printer Web Services menu.
Official HP Resources
HP OfficeJet Pro 7740 Support Page
HP Ink Cartridge Number Guide
Bottom Line
If your OfficeJet Pro 7740 is running low, the HP 952XL 4-pack is the most cost-effective way to refill all four colors and get back to high-volume printing.
Frequently Asked Questions
Can I use HP 952 standard and HP 952XL together?
Yes — you can mix yields across colors. Many offices run XL black plus standard color tanks.
Does the OfficeJet Pro 7740 need a setup cartridge?
No, your replacement cartridges install directly. Setup ink is only used the first time you unbox a brand-new printer.
Are Castle Ink HP 952XL cartridges compatible with HP Instant Ink?
No. HP Instant Ink only works with HP-branded cartridges enrolled in the program. If you cancel Instant Ink, you can use any compatible HP 952XL cartridge.
How long do HP 952XL cartridges last?
The XL black yields about 2,000 pages and each XL color yields about 1,600 pages, depending on coverage.
Why does HP show "Non-HP cartridge"?
This is a standard HP warning when using compatibles. Click OK and printing will continue normally.
Written by William Elward, Founder of Castle Ink — 20+ years in the printer supplies industry.
Shop Compatible Ink at Castle Ink
Save 50–70% on replacement cartridges for the HP OfficeJet Pro 7740. Guaranteed to work — backed by Castle Ink's compatibility guarantee.
Buy the HP OfficeJet Pro 7740 on Amazon: HP OfficeJet Pro 7740 on Amazon
See also: How to stop HP firmware updates from blocking your ink | Printer Ink Cost Calculator