This dongle supports 4K@30Hz HDMI output for screen mirroring or extending to monitors and projectors. It features 100W USB-C Power Delivery for fast charging of Type-C devices. It includes three USB 3.0 ports with 5Gb/s data transfer speed and SD/TF card slots for file access. The price drops from $15.99 to just $9.99. Shipping is free for Prime members. Else, it adds $6.