A Sony 8GB SDHC card doesn't appear in either slot either. I tried shortening the USB3.0 cable, cutting out the powered usb3.0 hub, but nothing worked. Eventually sdg1 appeared steadily, but clicking on it showed only "no sub-folders". There are also (from the first) folders named sdc1 and sdc2 in the media folder that display the same result. OTOH, a 2TB usb3.0 hdd shows up as sd1, and it can be read and written to, but cannot be unmounted.