The JCD371 provides extra connectivity for your MacBook, or other USB-C laptop. This pocket-sized multi-adapter with two USB 3.0 Type-A ports allow you to connect an external keyboard, mouse, or USB flash drive. With up to 5Gbps of high-speed transmission, data transfer is quick and easy. The HDMI port allows you to mirror or extend your screen and directly stream 4K UHD or Full HD 1080p video to an HDTV, monitor, or projector. The USB-C power delivery port allows you to connect a USB-C power adapter for charging your personal laptop.