I'd recommend mapping the OID to the correct asset type. When there is no OID mapping, Lansweeper will use other parameters scanned to determine the asset type. Most likely due to the network properties of the printer, it was misidentified as a router.
You can find a guide for how to create an OID mapping here: https://www.lansweeper.com/kb/95/changing-an-assets-asset-type.html
