NETGEAR AC750 WiFi Range Extender (EX3700-100NAS). System Requirements:2.4 and/or 5GHz 802.11 a/b/g/n/ac wireless router or gateway,Microsoft. Internet Explorer. 8.0, Firefox. 20, Safari. 5.1, Google Chrome 25.0 browsers or higher. Trouble shooting tip- If you cannot get a WiFi connection working, you can use an Ethernet cable to connect your computer to the extender. Data throughput, signal range, and wireless coverage per sq. ft. may vary due to differences in operating environments of wireless networks, including without limitation building materials and wireless interference. Operating temperature:32°to 104°F.