Rosewill USB 3.0 Wireless Dual-Band Adapter 1.2Gbps (AC1200UBE) Standards: IEEE 802.11ac, IEEE 802.11a/b/g/n Wireless Data Rates: Up to 1.2Gbps (2.4GHz - 300Mbps or 5GHz - 867Mbps) Chipset: Realtek RTL8812AU IEEE 802.11a/b/g/n/ac compatible Extreme High transfer data rate 11ac up to 867Mbps, 11n up to 300Mbps