https://www.bhphotovideo.com/c/product/1305741-REG/netgear_r6220_100nas_r6220_ieee_802_11ac_ethernet.html
SPEC 如上面的Link
802.11a/b/g/n/ac Wi-Fi Standards
Up to 1200 Mbps Wi-Fi Data Throughput
2.4 GHz / 5 GHz (Dual-Band)
External Antennas for Improved Coverage