Expansion dock ，5 in 1.
5-IN-1 Expansion Dock
【Multiport USB-C Travel Mini Dock】 Portable Video Adapter allows you to connect to your MacBook Pro or USB C Laptop to expands a 4K HDMI, Type-C Power Delivery charging port, 2x USB 3.0 Ports, 1000 Mbps RJ45 Ethernet port, an SD and a TF card slot. Unique traveling design for Laptop to deliver multi ports in the smallest footprint.
【RJ45 Gigabit Ethernet & USB 3.0 Port】Built 10/100/1000BASE-T Gigabit Ethernet RJ45 f, Wired network connections are faster and more reliable than any Wi-Fi.SuperSpeed USB 3.0 ports provide up to 5Gbps data transfer speeds.
【Compact&Modern New Design】The detachable mini-hub with SD and micro SD card readers, it can easily satisfy your needs of card writing and reading with fast speed.