Win7 connection U disk io device error how to solve?

1. First, right click on the “Computer” on the desktop and select “Manage” in the pop-up menu bar option.

2, after entering the "Computer Management", then open the window, click "Disk Management" to expand it.

3, and then find the U disk, right-click the U disk, select "Change Drive Letter and Paths" pop-up window, click "Change" button.

4, click the "Assign the following drive letter (A)", and then re-assign a drive letter by right of the "drop-down menu" and finally click "OK" button.

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