Cool Toner CE278A 78A Black Toner Cartridge, 4-Pack, 2,100-Page Yield

Spec sheet

The 4-pack format gives you four black compatible toner cartridges for your printer supplies shelf, so replacements are ready as cartridges run out.

Each cartridge is rated for a yield of 2,100 pages, based on 5% coverage on Letter/A4 paper. That gives you a useful estimate for planning routine printing.

These are Cool Toner compatible cartridges for select HP LaserJet models. They offer a replacement option for everyday black-and-white printing, copying, and scanning workflows.

• Name: CE278A 78A toner
• Type: Compatible black laser toner cartridge
• Capacity: 2,100 pages per cartridge, based on 5% coverage
• Compatibility: HP LaserJet Pro P1606dn, P1606, P1606DN, P1566, P1560, M1536dnf, and M1536
• Package size: 4-pack

Best use cases

This set suits home offices and small workgroups that rely on compatible LaserJet printers for regular documents. Keep the cartridges together as replacements for a shared printer, or use them to replenish supplies for a compatible P1600- or M1536-series setup. Black toner is a practical fit for letters, forms, and other text-focused pages on plain paper.

The stated page yield helps when estimating how often you may need to restock, while the four-cartridge format gives you several replacements in one purchase. For example, an office printing recurring paperwork can keep the next cartridge available instead of sourcing each replacement separately. If you are choosing between a single cartridge and a multi-pack, this bundle is designed for buyers who want multiple compatible replacements on hand.

Included in the package

The package contains four Cool Toner compatible CE278A/78A black toner cartridges. They are third-party compatible replacements, not HP OEM cartridges, and are intended for the listed LaserJet printer models.

Before you decide

Which printers are these cartridges compatible with? They are listed for the HP LaserJet Pro P1606dn, P1606, P1606DN, P1566, P1560, M1536dnf, and M1536. Match your printer’s model number to this list before choosing a cartridge.

How is the 2,100-page yield calculated? The stated yield is per cartridge and is based on 5% page coverage on Letter/A4 paper. Actual page counts can vary with how much toner each page uses.

Are these HP OEM cartridges? No. They are Cool Toner compatible cartridges for the listed HP LaserJet printers, rather than HP OEM cartridges.

When it makes sense

Choose this four-pack when you use one of the listed printers and want several black toner replacements ready for document-focused printing. The multi-cartridge format and stated per-cartridge yield make it a practical fit for maintaining supplies across a home office or small workplace.