ASUS USB-AC51. Connectivity technology: Wireless, Host interface: USB, Interface: WLAN. Data transfer rate (max): 583 Mbit/s, Bandwidth: 2.4 GHz. Networking standards: IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n. Wi-Fi standards: 802.11a, 802.11ac, 802.11b, 802.11g, 802.11n. Gain: 4.56 dBi