hmm... slice upgraded clover genconfig recently... if you are using clover configurator app it simplifies the process... on the left side of the app there is an option to generate a config. when you run it it will generate a new config file for clover. backup your existing one and boot from the new config. retest your usb issue. the new generator moves a lot of injection to a new clover section in devices properties. it is almost like device arbitrary used to be. you might have to transfer some things from the old config if it works.