It looks doable from the diagram on AliExpress’s listing for the OTR U18
https://www.aliexpress.com/item/32829985590.html
Hallo….If i will try to change the driver,i probably will lose the usb port…Iam right?
Yes. Probably the switch, too. These parts are all attached to the driver. For modding you want a more universal design with separate switch board.