Thought i would share this discovery to help other frustrated slim modders out there. I purchased a maximus sd tool on Ebay (probably a knockoff) to rgh a corona console and had no success reading the nand. None of my computers would recognize it no matter if i used the built in sd card slot or any of the usb readers i had. After looking at a schematic for a diy reader made from an sd card adapter i compared it to the sd tool and found that contact 3 (ground) on the card end did not connect the the 2 terminals on the qsb as it did with the diy schematic. I decided to try soldering in a jumper wire from the ribbon connector pin from pin 3 to the ground pad on the qsb to provide a ground path and it worked flawlessly.