[Borland]

1. Подключили, наверное, к USB3 (разъём голубого цвета, на задней панели)?..
2. На самом девайсе USB3 активирован?
How do I use the new USB 3.0 charging/data cable on my Samsung Galaxy Note® 3?

Enabling the USB 3.0 Connection

1. Connect the USB 3.0 cable to an active 3.0 USB port.
   Important! The 3.0 configuration screens will not be displayed if your cable is not plugged into an Active USB 3.0 port or if it is plugged into a USB 2.0.
2. In a single motion, touch and drag the Status bar to the bottom of the screen to open the Notifications panel.
3. Touch the Media device (USB 3.0) field to place a checkmark and activate the USB connectivity mode .
4. Read the on-screen information and touch Use USB 3.0 to initiate the mode.