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 devices(such as smart phone, 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 i