Go to Control Panel > Power Options > Change plan settings > Change advanced power settings > USB settings > USB selective suspend setting > Disabled .

Like any other hardware device, the KY888 USB Ethernet adapter requires a driver to function properly. A driver is a software component that enables the operating system to communicate with the device and utilize its features. Without a proper driver, the KY888 USB Ethernet adapter may not work as expected, or it may not work at all.

Most common for "Gigabit" models, offering speeds up to 1000 Mbps.

: Enables functionality on Windows 7, XP, and older macOS versions that lack built-in drivers. How to Identify Your KY-888 Hardware

If your download package consists of a zip folder containing .inf , .sys , and .cat files rather than an installer app, use these steps: Extract the downloaded driver ZIP folder to your desktop.

Once you have identified the internal chipset, download the appropriate verified driver package. Option A: Corechip SR9900 Drivers (Most Common for KY888)

The KY888 USB Ethernet adapter frequently utilizes RD9700 or Realtek RTL8152 chipsets, requiring users to identify their specific hardware via Device Manager to select the correct driver. Verified drivers can be installed by extracting downloaded files and manually updating the device via Windows Device Manager for optimal performance. For the Realtek chipset, drivers are available through

for Corechip) to install the correct drivers, while disabling USB selective suspend can fix connectivity issues. Microsoft Learn Ethernet adapter is not recognized - Microsoft Q&A