Remark: First install the driver from CD ( included in the package ), then plug this wifi adapter into your PC. Install Driver Tips : If the CD can not be used, please feel free to email us for support. We will respond to your within 24 hours, thanks!. Widely Compatibility: Support OS Windows XP / 10 / 8 / 8.1 / 7 / Vista ( Plug and Play for Windows 10 ) / Mac OS 10.6 -10.15.3 for MacBook / Desktop PC / Laptop ;Ultra-fast wireless adapter speed, make you have a non-general web experience. USB 3.0 Fast wireless Connection: We can experience excellent Transfer Speeds with usb 3.0 wifi adapter,USB 3.0 transfers data up to 10x faster than USB 2.0 and s also compatible with USB 2.0 USB 3.0 upgrades laptops desktops and computer to AC1200 WiFi speed enables smooth HD streaming and fast download. Dual-band 5GHz and 2GHz Bands: 5G wifi speed up to 867Mbps,2GHz 400Mbps, Advance WiFi Chip 8812BU bring faster speed and more stable signal for gaming, and streaming online is much more enjoyable without buffering or interruptions. Fast 1200Mbps USB WiFi Adapter - L-Link wifi adapter provides long-range and lag-free and stable wifi connections,Upgrade your PCs or laptops to 802.11ac standards which are there times fast than Built-in wireless N adapter speeds.