I just bought a USB media card reader. It's a Foxconn CR-G2H. It connects to the USB headers on the motherboard. Their are two headers on the reader, one labeled "motherboard" and one labeled "Front ...
If your SD Card is not detected in the Device Manager, then this post will help you. This issue can occur due to hardware issues, outdated or corrupted drivers, faulty SD Card, faulty SD Card reader, ...