I just intalled a Z77 Extreme4 motherboard. I also installed and internal SD card reader using one of the USB 2.0 headers. Windows doesn't see recognize the reader. I double checked and it's plugged in correctly. I downloaded a driver from Inland (card reader brand) and still nothing. I'm not sure if it's related, but 2 USB 3.0 inputs on the back panel don't work in the rear either. They are located at the top of the panel, next to the P/S 2 input. The rest of the USB2.0/USB3.0 inputs work just fine. The card reader is the only component using the USB 2.0 headers. I made sure all the drivers on the CD are installed.