I want to know if anyone is successfully using a usb 3.0 flash drive through any length of extension cable. I have had no end of trouble trying to use extension cables or hubs. I want to know if it's just inferior quality cables etc. or it's not supposed to work. I even tried a very short adapter with no cable, but it was a cheap one from ebay. One problem is it works some of the time but sometimes fails to detect and mount. Or through a usb 3.0 hub very slow performance. ie. slower than directly connecting a usb 2.0 flash drive without a hub. Also another question, does it matter if the outer casing of a usb connector is touching a large metal object?