interfacesPCI ExpressDimensions (W X D X H)4.8 x 4.5 x 0.85 in. (120.8 x 115.2 x 21.5 mm)Antenna2 Dual Band Detachable AntennasWIRELESS FEATURESWireless StandardsIEEE 802.11ac/n/a 5GHz, IEEE 802.11b/g/n 2.4GHzFrequency2.4GHz or 5GHzSignal Rate867Mbps at 5GHz, 400Mbps at 2.4GHz