This universal multifunction adapter lets you expand the connectivity of your laptop or MacBook through USB-C. You can connect your laptop to a 4K HDMI display, while also connecting a traditional USB 3.0 device. And, when coupled with your laptop's power adapter, the multiport adapter delivers power to help charge and maintain your laptop's battery. This compact USB-C adapter is a vital accessory for your MacBook, Chromebook, or any USB-C equipped laptop. It's extremely portable, with a lightweight, small-footprint design that tucks neatly into your laptop bag or carrying case. The rugged multifunction adapter meets the tough demands of travelers. Now you can rest assured knowing your adapter is ready when you are. If you have a 4K HDMI display, you can connect it to this combo adapter to create a dual-monitor workstation (laptop display + external display). With an additional display, you can get more work done at once by multitasking more efficiently. Plus, 4K resolution lets you enjoy astonishing ----picture quality, with rich and vivid realism.