ASUS USB-AC51 is one of the smallest 802.11ac USB Wi-Fi adapter for you to instantly upgrade your desktop and notebook to the 5G Wi-Fi with hassle-free setup. Its specially-designed internal antenna provides wireless speed up to up to 150 Mbps at 2.4 GHz and 433 Mbps at 5 GHz. It supports multiple OS including Windows, Mac OS X and Linux. The transmission quality and enhanced features make USB-AC51 a good choice for simultaneous downloads, online gaming and video streaming.The 802.11ac Wi-Fi adapter is designed to offer easy connection and help you instantly upgrade your PCs. This wireless USB adapter measures just 3 cm. Its easy to carry and fits in pockets, yet offers strong wireless. With its USB interface, the USB-AC51 gives your desktop and notebook an instant 802.11ac Wi-Fi upgrade, with access to speeds of up to 433 Mbps.Key Features:-- The smallest 802.11ac USB Wi-Fi adapter in the market- Selectable dual-band 5GHz/2.4GHz for up to 433 Mbps- Instant upgrade to next generation 5G Wi-Fi for your desktop and notebookSpecifications:-- Wireless Type 802.11 a/b/g/n/ac- Frequency Band 2.4GHz/5GHz- Form Factor USB Adapter- Width 30.98 mm- Depth 16 mm- Height 8.64 mm- Weight 4 g