got my s5 last week and it didnt come with a usb 3.0 cable. bought one off ebay which said it was genuine samsung and it does not connect or transfer at usb 3.0 speeds (nor is the usb 3.0 option available on the drop down menu on usb options) i complained and bought another from another seller. this one was exactly the same. suspecting a problem on the phone or my usb port i tried a cable from a usb 3.0 hard drive i have and it works perfectly. has anyone had any issues. could it just be that i have bought 2 chinese rip off samsung cables? they looked legit but then knock offs do these days.