Akodi via Amazon offers the Anewkodi Dual-Band 802.11ac Wireless USB Adapter for $16.99. Coupon code "P8XCSMX6" cuts it to $8.99. Plus, Prime members receive free shipping. That's a buck below our mention from three weeks ago and a buck under the lowest price we could find for any such adapter shipped from the U.S. elsewhere today. It features a long-range 2dBi antenna and up to 600Mb/s WiFi speeds on 5GHz and 2.4GHz bands. Deal ends September 1.