Feature: Small and beautiful appearance Compatible for Surface Pro 6/ Pro 5/ Pro 4. Color: Black Material: Aluminum Alloy Specification: USB interface compatible: USB 3.0/2.0/1.0 Memory card support: Secure Digital/Secure DigitalHC/Secure DigitalXC/TF HDMI -compatible: 4K 30Hz Compatible system: for Windows XP/7/8/10, for MAC OS 9X/10 Voltage: 5V 9V 14.5V 20.3V Input: USB 3.0 male, Mini DP male Output: USB 3.0 x 2, HDMI -compatible x 1, Secure Digital/TF x 1 Product size: 91.5 x 32 x 11.5mm/3.60 x 1.26 x 0.45 inch Package Contents: 1 X USB Hub Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.