Hi plasm0,
The below links are for Windows 8 operating system. Please install the chipset drivers first and then the card reader drivers.
Chipset drivers: http://dell.to/YfzFd2
Card reader drivers: http://dell.to/13IlZ1V
Click the above links and follow the onscreen instructions to install the drivers,
Restart the system and connect the SD card and check the functionality.
Please post the results.