HP 640A Magenta Toner Cartridge C4193A is a toner consumable for colour laser printing. Its magenta toner supplies the colour component used alongside other toner colours in printed documents and graphics.
The listing gives an ISO page life of 6,000 pages at 5% coverage. This figure provides a standard reference for cartridge yield; actual page counts can vary with print content and coverage.
It is listed for HP Color LaserJet 4500 and 4550 series printers, including models in those families. The pack contains one magenta cartridge.