SKU:

CS-HP--M855x+-BK

Printer Brand:

Hewlett Packard

OEM Number:

CF310A

Ink Color:

Black

Page Yield:

Black: 29000

Printer Type:

Laser Cartridge

Condition:

New Compatible

Frequently Asked Questions

Which black does the M855x+ use?

The Color LaserJet M855x+ runs on the CF310A black — this cartridge. Whatever tray configuration your x+ carries, the black supply is the same HP 826A unit the printer names on its supplies screen, and the label on the cartridge you remove will confirm the CF310A code.

Does the expanded input change how fast black gets used?

The trays change how long the machine can run unattended, not how much toner a page takes. Toner use follows coverage: a text-heavy mixed-media job — letters from one tray, forms from another, covers from a third — is a black-led workload, and the 29,000-page rated yield is your planning figure. More paper capacity simply means the cartridge, not the tray, becomes the thing that ends the run.

Our x+ runs overnight batches — how do we avoid a 2 a.m. empty cartridge?

Check the black level on the supplies page before the batch is queued, not after. If the percentage is in single digits and the batch is long, swap first — a two-minute change at 5 p.m. beats a stalled run discovered at 8 a.m. Keeping one sealed spare beside the machine is what turns the overnight schedule from a gamble into a routine.

The overnight output came out light — is the cartridge to blame?

If the lightness is even across the whole batch, yes, most likely: the cartridge faded as it emptied and every page after that point inherited the fade. Print a supplies status page; if black shows empty or near it, a fresh CF310A restores full density from the next sheet. Pages near the start of the batch will show you exactly where the old cartridge gave out.

How long does the swap take on an x+?

About two minutes. Open the front door, slide the old cartridge out, unpack the new one and remove its seal and guards, then push it in until it clicks and close the door. The printer calibrates briefly and is ready — the extra trays and finishers on an x+ do not change the cartridge procedure at all.

What if we receive a faulty cartridge?

It is covered by a 1-year warranty, with 1-year free returns available through our shipping and returns policy. We ship from Illinois, Pennsylvania, Georgia and California warehouses, and our support team answers Monday through Friday, 9 AM to 5 PM CST.

About This M855x+ Black Cartridge

The x+ configuration is bought for one reason: so a big, mixed job can be loaded once and left to finish. That makes its black cartridge the quiet single point of failure in the whole setup — paper in five trays does not matter if the toner gives out at sheet nine hundred.

This compatible CF310A is $151.71 and carries the full 29,000-page 826A yield. Stock it next to the machine and the expanded input can do what it was bought to do: run, uninterrupted, to the end of the job.