USB 2.0 WiFi Adapter Wireless WiFi Network Dongle Adapter Lan Card  Receiver Transmitter (Built in Antenna) Operating System: Windows 2000//7/8/8.1/10/XP/Vista/Linux/Android/MAC OS Employs 802.11n technology, wireless transmission rate up to 150mbps. Provide high speed data transmission for video or games Connects the USB Adapter to a laptop or desktop computer to get wifi signal transmitte and Receive USB wifi card enhanced WEP and WPA wireless security for protecting Internet access WARRANTY-FREE. Our adapter comes with 30 days mkoney back and 12 months warranty guaranteed. Our friendly customer service are always ready to help you with any issues