HP OfficeJet Pro X551dn X551dw Ink Cartridges
Your HP OfficeJet Pro X551dn and X551dw printers use the HP 970 and 971 ink cartridge series. Ink Depot has been supplying reliable consumables for these printers since Apr 2013. Built for fast workgroup document production, upgrading from standard 970 (CN621AA) black cartridges to high-yield 970XL (CN625AA) options reduces cost per page during large print jobs. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance.
Expected Page Output and Replacement Cycles
Page yields for HP 970 and 971 cartridges are determined using ISO/IEC 24711 standard testing methods under continuous printing conditions. Real-world page yields vary based on document coverage, print settings, and frequency of auto-cleaning cycles.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 970 | Standard | Black | 3,000 | $0.045 |
| 971 | Standard | Cyan | 2,500 | $0.056 |
| 971 | Standard | Magenta | 2,500 | $0.056 |
| 971 | Standard | Yellow | 2,500 | $0.056 |
| 970XL | High Yield | Black | 9,200 | $0.029 |
| 971XL | High Yield | Cyan | 6,600 | $0.040 |
| 971XL | High Yield | Magenta | 6,600 | $0.040 |
| 971XL | High Yield | Yellow | 6,600 | $0.040 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing Between Genuine and Compatible Options
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Compatible HP 970XL (CN625AA) and 971XL (CN626AA) options provide a cost-effective alternative for high-volume office document printing without compromising text clarity. Learn more by reading our guide to genuine vs compatible cartridges.
Purchasing Strategies & Fast Delivery
If your office prints heavy volumes of routine business text, switching to high-yield 970XL (CN625AA) black cartridges significantly lowers per-page costs compared to standard 970 (CN621AA) units. For colour documents, high-yield 971XL (CN626AA, CN627AA, CN628AA) cartridges extend time between cartridge swaps. All compatible cartridges come with a money-back guarantee. View our full returns policy for complete peace of mind. Free delivery applies on all orders over $99. We ship directly from warehouses in Perth, Brisbane, Sydney, Melbourne and Adelaide. Explore our complete catalogue of HP ink cartridges.
Essential Cartridge Tip
Pro Tip: In high-volume office environments, replace ink cartridges individually as they deplete rather than in complete sets, as black ink typically wears down at twice the rate of individual colour tanks.
Frequently Asked Questions
Do the HP OfficeJet Pro X551dn and X551dw use the same ink cartridges?
Yes, both the HP OfficeJet Pro X551dn and X551dw printers use the exact same HP 970 standard and 970XL high-yield ink cartridge series. Any HP 970 or 971 cartridge installed will operate identically across both models.
Can I mix standard HP 970 cartridges with high-yield HP 971XL cartridges?
Yes, you can install standard HP 970 (CN621AA) black cartridges alongside high-yield HP 971XL (CN626AA, CN627AA, CN628AA) colour cartridges in the same printer. The internal physical dimensions of standard and XL cartridges are identical, so the printer accepts any combination seamlessly.
Why do HP 970XL black cartridges yield significantly more pages than colour cartridges?
High-volume business printers like the X551 series are engineered for heavy document workflows where black text dominates total output. The HP 970XL (CN625AA) black cartridge holds a larger ink reservoir designed to deliver up to 9,200 pages, balancing replacement frequency against individual colour cartridges.
Do high-yield 970XL and 971XL cartridges dry out if not used daily?
HP 970 and 971 cartridges use pigment-based formulations engineered to remain stable inside sealed chambers. Provided the printer remains connected to mains power so periodic automated maintenance functions, high-yield cartridges can remain installed for extended periods without drying out.
