I have a Surface pro, an ANKER usb hub 3.0 and a Toshiba canvio usb 3.0 external hardrive. the 1.5tb version. the reason I made this thread is because, when hooked up to my hub, non powered, the portable hard drive loves to act funny and mount and dismount when it pleases basically. lol I bought this drive to store my numerous amounts of steam games on. they work just fine off of it. issue is, at times, the drive doesn't seem to want to mount when it plugged up to my usb 3.0 targus hub. I have to keep playing around with it or restarting to get it to mount from it. now if I plug the drive directly into the pro it works fine. but the problem is I use xbox 360 controller for gaming. so I bought the hub. its non self powered and is powered from the pro. now itll act right sometimes but most times lately it seems like I have to go through hoops to get it to mount. is my issue that im not getting enough power? it does work at times or eventually. but even if I have it hooked up to the hub by itself, it loves to act funny. now if I plug it directly into the pro, it works everytime. ive researched on this and its not the portable hard drive cable as it works everytime plugged into the pro directly. is it that me using the hub and controller causing the issue? because it will work eventually after me playing around and plugging it and unplugging it. is my iSSUe not enough power? do I need to buy a self powered usb 3.0 hub or docking station? like the dockable one. or is the pro docking station self powered? that only has one usb 3.0 port right? its just getting tedious keep having to play around to get it to work. its not my targus hub because it does this on my 2.0 hub also. im hooked on all these steam games and sales and external drive was the only solution. it works great when it wants to mount. also all latest drivers installed also. anyone else have this issue or know solution. any insight greatly appreciated.