See a USB card reader manufacturer's website.
Select "Support," then select the brand name of USB card reader you're using. The complete phrasing differs with regards to the website you might be visiting.
Pick the computer currently attached to the computer, then click the "update driver" download link. This downloads the driving force for your computer.
Double-click the downloaded driver. The installation wizard automatically loads. Accept the end-user agreement, then leave the installation name and location as-is. Select "Install." The updated driver to the USB card reader automatically installs onto your computer.