The Anker Advantage: Join the 55 million+ powered by our leading technology. 9-in-2: Plug the 2 USB-C connectors into your MacBook to expand to a multi-function USB-C port, a USB-C Power Delivery input port, an HDMI port, 2 USB-A 3.0 ports, an Ethernet port, an AUX port, and SD/microSD card slots. High-Speed, High-Def: A multi-function USB-C port supports huge charging power up to 100W, data transfer up to 10 Gbps, and media display at resolutions up to 4K. Multi-Monitor Display: The HDMI port supports a resolution of 4K@30Hz while the multi-function port supports 4K@60Hz. Connect to both simultaneously to enjoy crystal-clear streaming or mirroring across 2 displays. What You Get: PowerExpand 9-in-2 USB-C Media Hub, welcome guide, 18-month warranty, and friendly customer service.