Hi alzhao, thx again for supporting!
I’ve already done some tests installing that packages, also on vanilla openwrt 19.07.08 and last 21 stable and your custom last firmware (I’ve opened another dedicated thread, thinking that vanilla was the problem)… but nothing, lsusb doesn’t show it and I cannot find some usb under /dev. I read somewhere that the error maybe due to bouncing timing, usb does not receive answer and close the connection. I’m evaluating to do more tests with a powered usb hub, but I have no garantee it works (and it costs, here, more that you router… I was looking for a cheap solution :slight_smile: :frowning: ). I’m sad because the product has amazing value/price.