EP-N8553 Mini USB Wireless WIFI Ethernet Adapter 150Mbps 2.4GHz 1: Chipset MTK7601, standard IEEE802.11 b / g / n. 2: Built-in 1dBi antenna, frequency 2.4GHz, transmission speed 2.4Ghz up to 150Mbps. 3: Operating system Windows XP / Vista / 7/8 / 8.1 / 10, MAC OS X 10.11.X /10.10.X. Wireless Protocol:802.11a/g,802.11nTransmission Rate:150MbpsWi-Fi Supported Frequency:2.4G