If you are using our DisplayLink product on Windows and the monitor cannot be used properly after waking up from sleep, please follow the steps below to Disable USB selective suspend:

1. Open the Control Panel on your PC
2. Select Hardware and Sound
3. Select Power Options
4. Select Change plan settings against your preferred power plan
5. Select Change advanced power settings
6. In the Power Options dialog that opens select USB settings
7. Select the USB selective suspend setting
8. Change the Setting to Disabled

Or follow the steps from TenForums: How to Add or Remove "USB 3 Link Power Management" from Power Options in Windows.