It is estimated that you have misunderstood. Under the premise of double-sided printing, it is manual double-sided printing, which means that after you have printed one side, you can print another side.
I also bought one, but I don't know how to install it. I put it in the paper and it didn't respond. I kept it at home and didn't use it. I just made it according to the manufacturer's instructions or it didn't work. I just don't understand,
The printer is of proper size and square, with copy scanning on the top and paper feeding and discharging on the bottom.It is convenient to support duplex printing.Printing, copying and scanning can be done without installing Canon APP. Windows can directly support it, which is very convenient.The only disadvantage is that there is no separate paper box, which can only be placed outside.The printing effect is pretty good.