Which toner fits the HP Color LaserJet Pro M454dn?

A ratio above three, on all four cartridges

That is what sets this series apart from small office colour machines. Usually the high-capacity version doubles the autonomy and exists only on the black. Here it triples, and it covers all four: 2,400 → 7,500 pages in black, 2,100 → 6,000 per colour.

The consequence reverses compared with personal machines. On a small colour printer where colour only serves a logo, keeping standard cartridges avoids them ageing once opened. Not here: this machine has no Wi-Fi, it connects over Gigabit Ethernet — it is a departmental printer, wired for several workstations, and its recommended volume goes up to 4,000 pages a month.

At that pace, a 415A black lasts eighteen days and a 415X close to two months. On the colours, the gap is of the same order. Taking standard cartridges on shared equipment means tripling the number of interruptions — and the interruption costs more than the cartridge.

Reading four levels on two lines

Its display is a two-line LCD, for four consumables. The supplies status menu scrolls through them one by one; it is usable, but awkward when you want an overview.

The configuration page, printed from the panel, remains the better tool: it gives all four levels at once, plus the machine's total counter. On shared equipment, it is also the only figure that lets you check whether the real volume matches what you thought you were printing.

What the M454dn does not do

It prints, and only that: no scanner, no copying, no fax. Which is what separates it from the M479 multifunction models, which nonetheless take exactly the same toners. It turns out 27 pages per minute, holds 300 sheets, prints with automatic duplex, and its maximum cycle reaches 50,000 pages — a mechanical limit, never a basis for calculation.