TP-Link Archer T1U AC450 Nano USB Wireless WiFi Network Adapter, Works with Windows and Mac OS, 5GHz Only. USB WiFi Adapter: Wireless data transmission rates of up to 433Mbps MiNi Design: Allows you to plug it in and forget it is even there Lightning Fast Speed: Utilizes 802.11ac standard and is backward compatible with 802.11a/n Strong Signal: Transmits on only 5GHz band to avoid wireless signal interference Leading Support: 2-year warranty and unlimited 24/7 technical support; JD Power Ranked TP-Link "Highest in Customer Satisfaction for Wireless Routers in 2017"; Support Windows (XP/7/8/8.1/10) - MAC OS (10.7~10.13)