Genuine OEM Panasonic Panafax UF-490 Toners
The Panasonic Panafax UF-490 listings use similar-looking codes for different black supplies: UG3221 is toner, while UG3220 is a drum unit. The final digit and product name distinguish the toner cartridge from the drum.
Toner Buzz lists genuine Panasonic black toner and black drum units for the UF-490. Compare the complete code rather than the shared UG322 beginning when selecting the supply.