Chipset: Reatek 8821CU. compatible with 802.11ac standard, backward compatible with 802.11 a/b/g/n. Maximum speed up to 5GHz 433Mbps or 2.4GHz 150Mbps. 5.8GHz is ideal for HD video streaming and lag-free online gaming, 2.4GHz is for normal use such as web surfing, music, chat online etc. Support Windows XP/7/8.1/10 for PC. (Note: Bluetooth also uses the 2.4GHz frequency band. When using a Bluetooth headset, it is recommended that WiFi be connected to a 5G hotspot to avoid mutual interference between WiFi and Bluetooth in the same band.) Bluetooth4.2 enables your Non--Bluetooth PC to wirelessly connect with Bluetooth devices(such as smart phone, compatible with ipad, tablet, speaker, headset, keyboard, mouse, printer, projector,etc.) for data transfer, edit or print, up to 10m connection distance(ONLY support Windows 7/8/8.1/10). Support WiFi mode & AP mode. WiFi mode: upgrade your PC, Laptop or Mac, working with the latest AC Wi-Fi router for faster speed and extended range. AP mode: turn a wired internet connection into a WiFi hotspot, providing WiFi signal to your mobile devices. The USB WIFI Bluetooth Adapter has its own Network card and Bluetooth driver, plug and install the driver, simple and quick operation. If the bluetooth driver cannot be obtained automatically, please drive it with the Optical Disc. . . .