AC1900M USB WiFi Adapter: This compact USB WiFi adapter supports 2 4GHz and 5GHz WLAN networks. 1900 (1300+600) Mbps wireless speed. 20MHz&40MHz&80MHz bandwidth transmission. OFDM with BPSK, QPSK, 16QAM, 64QAM, 256QAM modulation Smooth and delay-free connection: Wi-Fi speeds up to 600 Mbps on the 2.4 GHz frequency band and up to 1300 Mbps on the 5 GHz frequency band. Dual frequency connection allows for no delay high-definition video streaming and gaming Dual frequency 2.4GHz and 5GHz frequency bands: Dual frequency provides flexible connections, allowing your device to access the latest routers, faster speeds, and extended range 4x3dBi omnidirectional antenna: greatly enhances the reception and transmission of WiFi signal strength. 300 meters outdoors and 100 meters indoors (depending on actual environmental changes). Universal compatibility: This WiFi receiver supports Windows XP/Vista/7/8/8.1/10, MAC OS. Ultra fast USB 3.0 port, backwards compatible with USB 2.0 Compliant with IEEE 802.11ac, IEEE 802.11n, IEEE 802.11g, IEEE 802.11b standards Specification: Working temperature: 0 ℃~40 ℃ Storage temperature: -10~70 ℃ Standard protocol: 802.11ac/802.11a/b/g/n Port: USB3.0 Frequency band: 2.4GHz and 5GHz