USB4 Driver Upgrade Instructions

Uninstall the old version of the USB4 drivers before installing the latest version. Perform the following steps to ensure all USB4 device entries have been uninstalled before installing the latest version.

To remove old USB4 drivers from Windows 10.

1. Go to Control Panel and double click on System. You can also right-click "Computer" on the Start menu (or on the desktop if it's shown there) and choose Properties.

Note: A faster way for opening up the System applet is to press the Windows logo key on your keyboard and then press Pause/Break at the same time.

2. Click on the "Advance System Settings" link, and then click on the "Environment Variables" button.

3. In the System Variables section, click on the "New" button.

4. In the New System Variable dialog box, under the Variable Name value, enter devmgr_show_nonpresent_devices (just copy the value from here and paste it there) and give it a variable value of 1.

Click Ok.

5. In the Environment Variables window, notice how the new variable appeared in the System Variables section. Click Ok.

6. In the System Properties window, click Ok.

7. Log off and log on.

8. Open Device Manager (Control Panel > System > Hardware > Device Manager).

9. From the View menu, click Show Hidden Devices and notice the change.

10. Expand the Encoder Interface tree node.

11. Unplug any attached USB4 devices and then select each Encoder Interface sub-node (one at a time) and right-click and then select Uninstall.

12. Install the latest USB4 software and then attach the USB4 device.