Are there any adapters that will power more than one USB device and charge the new Macbook at the same time through the USB-C connector other than the poorly designed, poorly reviewed USB-C Digital AV Multipart Adapter from Apple? I don't need an AV out; I do need one that will charge the MacBook and power at least two USB devices at the same time: an USB-connected HP printer and a Seagate HD backup HD. All I see is the Apple device for $79, and, according to reviews, it's a dog.
