![]() You could try device install by instructing the system to detect new devices and if there are no suggestions, manually add the USB 3.0 controller and load drivers from Dell Support. it may not automatically update the drivers until the devices are detected by connection. One key might be the age of the Win 7 Ultimate if made before USB 3.0. ![]() My wild guess is that because the problem began after reverting from Window 10 to Windows7, the problem may be that there is some conflict with one or more of the USB Host Controller drivers. ![]()
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