So, I unplugged my HDD from the back of the Wii U recently to transfer some large files from PC to PC (and I don't have an SD reader on hand), then I go back later to connect the Y-cable to the HDD then to the Wii U ports in the back, the data end, with the blue tip, is in the top bottom port with the power port in the bottom. RetroArch Wii does indeed allow me to navigate the USB root, look for ROM directories, etc. however, when I load USB Loader GX, it hangs at "initializing USB" and refuses to continue; twice I've had to reboot the Wii U. Is there a reason why it no longer goes past the screen? Should I try swapping ports to see if it works? This is really weird.