Multifunctional Extension: Multifunctional ports extend your laptop with 3 USB3.0 ports, PD port, TF/SD card reader, which can transfer different data such as videos, pictures,data, etc and meet all your daily needs. The item only for MacBook Pro 2016/2017/2018.

Efficient Transmission: 3 USB3.0 ports can transfer your data with high speed up to 5Gbps, and for your MacBook Pro, it supports abundant USB peripherals such as keyboard, printer, hard drives and so on . And SD/TF card reader can not simultaneous read.

Pass-through Charging Port: Charging port supports Power Delivery(PD), the connected devices never mind power, Thunderbolt 3 will charge them with great rapidity while you are viewing or transfer data.

SD/TF Card Reader: Plug and play, it can instantly read your TF/SD card with high reading speed. Please notice two cards can not simultaneously read.

Portable Design: Simple streamlined but fashionable Grey shines your laptop. Four corners of hub are cut smooth and round, an oxidized surface of aluminum brings you sleek touch with pocket size of 3.8 *1.2 *0.4 inches. All of them is for users to have a more comfortable and portable experience.