Changing Black Laser Toner on my Dell MFP H625cdw PCL6. It's darned easy. Not tutorial - YouTube
VICTORSTAR 4 Colors Compatible Toner Cartridges S2825cdn H625cdw H825cdw Extra High Yield 5000 Pages for Black & 4000 Pages for C M Y for Dell Color Laser Printers H625cdw H825cdw S2825cdn (4C) - Newegg.com