$19.99 – Rosewill RNX-AC600UB_v2.0, Dual Band Wireless AC600 Wi-Fi Adapter, IEEE 802.11AC IEEE802.11a/b/g/n, Up to 433 Mbps (5.0 GHz) + 150 Mbps (2.4 GHz) Wireless Data Rates, USB 2.0 Interface