Many Essgoo units have two USB cables. One is for peripherals (flash drives), the other only for charging. Try both. Also, try a USB 2.0 drive – USB 3.0 drives often fail.
Fixed ^new^ — Essgoo Firmware
Many Essgoo units have two USB cables. One is for peripherals (flash drives), the other only for charging. Try both. Also, try a USB 2.0 drive – USB 3.0 drives often fail.