I use a POS USB Powered adapter from amazon.   https://www.amazon.com/gp/product/B014SK2H6W/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1   it's not perfect, and requires you to configure it to the wifi with your laptop, then plug it into the meraki.    I'm sure theres better ones, but thats what I've got. ... View more