Edimax EW 7811UAn 11n 150M 1T1R Wirelss NANO USB adapter
EDIMAX - Legacy Products - Wireless Adapters - AC450 Nano USB Wi-Fi Adapter for MacBook Upgrade to 11AC for Faster Performance, Plug it and Forget it, Support Mac OSX 10.7~10.11 (5Ghz Only)
EDIMAX EW-7811Un Wireless Nano Adapter IEEE 802.11b/g/n USB 2.0 Up to 150Mbps Data Rates, with 16 languages EZmax setup wizard for easy installation - Newegg.com