Hi guys! I'm stuck and would appreciate help from anyone that might know whats going on. I hate what Apple have done with the removal of the SD card reader. There simply was no need and its made my YouTube work a misery! Anyway I got yet another SD card reader by Promate. Has a USB 3.0 and USB C on the other end. BUT When its plugged in, the internet stops working on the mac. Sites won't load. As soon as I pull it out... it works. Does anyone have any ideas/suggestions?