Question about HP Color LaserJet Pro MFP 3302sdw

I wrote no a day ago. Checked today: Duplex printing works.

Pro MFP 3302 series can perform duplex scanning, especially the models with the identifier fdwg or fdw. These models have an automatic document feeder (ADF) that can scan both sides in one pass. Duplex scanning is not possible on cheaper models (fdng, sdwg).