Click the Browse... button. Select the unzipped folder containing your portable JP108 driver files. Ensure the box next to "Include subfolders" is checked.
Before forcing a downloaded driver onto your operating system, verify that your adapter matches the JP108 hardware configurations. jp108 no 030818 usb lan driver freerarl portable
Generic chipsets can be highly sensitive to voltage variations. If the device does not register, unplug it and move it from a USB 3.0 (blue) port to a standard USB 2.0 (black) port, or vice versa. Avoid using unpowered USB hubs. Click the Browse
Once you've downloaded a driver package, you'll typically have two ways to install it. Ensure the box next to "Include subfolders" is checked
Try plugging the adapter into a different USB port. If you are using a desktop, use the ports directly on the back of the motherboard rather than the front panel ports.