D-Link DAP-2680 rev A1


 * • 1300 Mbps - 4-stream 802.11ac device (433Mbps per stream),
 * • 450 Mbps - max. PHY rate for the 40MHz wide 2.4GHz channel = 1750 Mbps class

Only three of the QCA9984's tx/rx chains are actually
 * implemented so this is 3x3:3 for 5GHz.