AIRETOS AEX-QCA9880-NX - 1.3Gbps Three Chain, Dual Band 802.11ac/abgn WLAN &fnof;_ Extended Temperature Grade, Full Size MiniPCI Express Module IEEE 802.11ac Dual Band (backwards compatible with 802.11abgn) Extended operating temperature grade (-20C ~ 70C) Three antenna connectors, for MIMO 3Tx3R (3 Transmit & 3 Receive) technology Transmission Beamforming (TxBF) PCI-E 2.0 standard specification with up to 4 Gbit