This adapter can convert HDMI, USB-C, and USB-A to USB-C. I bought it new, but realized I didn't need it, so I'm selling it. I've opened it and taken it out, but it's still in the box, and I will ship it with the box. Here's a copy of the product overview: ===== With the USB-C Digital AV Multiport Adapter, you can connect your USB-C-enabled Mac, iPad, or iPhone to an HDMI display, while also connecting a standard USB device and a USB-C charging cable. This adapter allows you to mirror what's displayed on your USB-C-enabled Mac, iPad, or iPhone to your HDMI-enabled TV or display. ===== https://www.apple.com/jp/shop/product/MW5M3ZA/A/usb-c-digital-av-multiport%E3%82%A2%E3%83%80%E3%83%97%E3%82%BF