Any gadget of innovative design seems attractive to me. But there is always a price to pay for your try. Some kind of tortured by the ambitious to do well with all I got. Just like the following case :
I have happened to buy this gadget when scanning the Amazon page. Product arrived in my house quickly. At first, I mainly use its OTG function on my Nexus 7. It works well with interesting experience. But when inserted a SDHC SD card for reading the data at the same time, as if the OTG behaved dull and slow data transfer. Everything came back into life when I reboot my PC. I am not sure the issue results from my PC . Will someone give the possible solution ?