Universal Serial Bus (USB) controllers are small pieces of hardware that allow your computer to load connections through your USB ports. USB 2.0 is a complete overhaul of the USB input and output protocol allowing for higher speed than its older counterpart. The goal of this new serial bus is to broaden the range of external peripherals that you can plug into a computer. USB 2.0 uses a raw data rate of 480 Mbps, which is 40 times faster than its preceding interface. Peripheral devices that use legacy ports such as PS/2 serial and parallel ports require USB functionality. All USB drivers include a set of drivers that install after the device is inserted into a USB port.
Right-click the "Computer" shortcut icon on the desktop and then click the "Properties" link from the drop-down menu. The Properties dialog box displays on-screen.
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Click the "Hardware" tab and the "Device Manager" button. The Device Manager launches.
Click the "Devices by Type" option from the View menu and then locate the "USB 2.0 EHCI Controller" in the Universal Serial Bus Controller or Other Devices section.
Right-click the "USB 2.0 EHCI Controller" and then click the "Update Driver" button from the drop-down menu.
Click the "Install the Software Automatically" to launch the Install Wizard.
Click "Next" button to proceed and then your USB 2.0 driver installs and updates itself. Click the "Finish" button — after the on-screen prompt appears — to complete the installation process.
Restart your computer before and after you install and update the driver.