For Surface Pro 6 Pro 5 Pro 4 Hub Dock with 4K HDMI Compatible USB 3.0 TF Slot
HDMI -compatible: 4K 30Hz. Output: USB 3.0 2, HDMI -compatible 1, Secure Digital/TF 1. USB interface compatible: USB 3.0/2.0/1.0. Compatible for Surface Pro 6/ Pro 5/ Pro 4. 1 X USB Hub. Input: USB 3.0 male, Mini DP male.