Kyocera FS-3920DN Black Toner Cartridge, Genuine (G0734)
Reset Toner Chip TK-352 for Kyocera FS-3920DN 3640MFPRefill | XwkTech
Amazon.com: Kyocera 1T02LX0US0 Model TK-352 Black Toner Cartridge For use with Kyocera FS-3040MFP, FS-3040MFP+, FS-3140MFP, FS-3140MFP+, FS-3540MFP, FS-3640MFP and FS-3920DN Printers : Office Products
Replacing Toner: ECOSYS FS-3640MFP and FS-3540MFP - YouTube