JRCX ANcrown-001 USB HUB, 3.9 x 3.9 x 0.9 inches, BLACK-10 JRCX USB C HUB Design: The product is specially designed for 2016/2017/2018 MacBook Pro, with Thunderbolt 3 port and two models of 13 and 15. Like MacBook, the body of ancrown is made out of aluminum alloy, and the design of the appearance shape matches perfectly with that of MacBook Pro. The interface type includes Thunderbolt 3 port, 4K HDMI (30 Hz) video output port, USB-C data port, two USB 3.0 and MicroSD/ TF card reader. Multifunction Port: The data reading of Thunderbolt 3 interface can reach 40Gbps, with a power supply of 90W and a video output of 4k60Hz. The data reading of ype-c port can reach 5Gbps, and the compatible device of TF/ SD card can reach 256GB. HDMI Port: The output of 4K HDMI supports connection to the projector or the external display (or TV). Its video output interface can reach 1080P@60Hz to 4K@30Hz. USB 3.0 Port: The strong capability of power transmission enables the connection to all ports while your laptop is on charge! The integrated chip FRESCO imported from America allows the full use of your laptop without heating up thanks to the advanced temperature control technology. The reading speed of 2*USB 3.0 can reach 5Gbps with an output current of 2.1A JRCX WARRANTY18 month warranty. If you have a problem, feel free to contact us,The product provides 18 months to guarantee the quality! Our professional team ensure that you enjoy good post-sales service. Thank you for using our product and sharing with others.