Apple already sells something like that: http://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av-multiport-adapter?fnode=8b http://www.apple.com/shop/prod

Apple already sells something like that: http://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av-multiport-adapter?fnode=8b http://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av... You can pass power through it and it adds USB-A and HDMI.