HP C4127A Toner Cartridges

Veteran LaserJet 4000 and 4050 printers refuse to retire, and the reason they keep earning their keep is a cartridge that is still easy to buy: the HP 27A (C4127A). Its high-yield counterpart, the HP 27X (C4127X), carries extra toner for departments that print in volume — both fit every machine from the LaserJet 4000 and LaserJet 4000TN to the LaserJet 4050N. Because one cartridge family covers the whole range, a mixed fleet of 4000s and 4050s needs only one spare SKU on the shelf. Clever Supplies keeps genuine OEM HP 27A and 27X cartridges in stock alongside compatible versions, letting you feed these workhorses at OEM or budget prices. Model number starts with 4000 or 4050? You are looking at the right cartridge.

Works with these HP printers

• LaserJet 4000
• LaserJet 4000N
• LaserJet 4000SE
• LaserJet 4000T
• LaserJet 4000TN
• LaserJet 4050
• LaserJet 4050 USB-MAC
• LaserJet 4050N
• LaserJet 4050SE
• LaserJet 4050T
• LaserJet 4050TN

Frequently Asked Questions

I have a LaserJet 4050 — do I need the 27A or the 27X?

Either one fits. The 27A (C4127A) and 27X (C4127X) are the same cartridge in standard and high-yield sizes, and every LaserJet 4000 and 4050 accepts both. Pick the 27A for light use or the 27X if you print enough that fewer cartridge changes appeal to you.

What is the practical difference between OEM and compatible 27A cartridges?

OEM cartridges come from HP with original toner formulation and chips; compatibles are independently manufactured to fit and function the same way. In everyday black-and-white office printing the output looks the same — the real difference is price, with compatibles costing noticeably less per cartridge.

Is the 27X worth the higher price over the 27A?

For offices that print steadily, yes. The 27X holds much more toner, so you change cartridges less often and the cost of each printed page drops. Light users who print only occasionally may never recoup the premium, in which case the standard 27A is the smarter buy.