Genuine OEM HP Color LaserJet CM4540 fskm Toners

The Color LaserJet CM4540 fskm pairs HP 646X black with HP 646A cyan, magenta, and yellow in its four-color toner set. HP 648A is the separate toner collection unit and should not be mistaken for a print cartridge.

Toner Buzz carries genuine HP toner and the HP 648A collection unit for the CM4540 fskm. Use the mixed set when the toner colors are due, or the collection unit when that part is named in the alert.