U9 is an 11ac dual band Wi-Fi Adapter. 5GHz wireless speed of U9 can be up to 433Mbps and 2.4 GHz can be up to 200Mbps. The advanced technology MU-MIMO has been used on U9 which can improve data transfer efficient and provide a smoother streaming. With internal drive, can automatically complete installation once plugged into your computer.With a compact and mini designed, U9 has no effect on usage of neighboring ports. U9 also Compatible with Windows (XP/7/8/8.1/10), can satisfy with various user requirements.Interface USB2.0 Dimension 36.8mm*18.5mm*7.6mm(L x W x H) Antenna Internal PIFA Antenna Wireless Standards IEEE802.11b,IEEE 802.11g, IEEE 802.11n, IEEE 802.11a,IEEE 802.11ac Frequency 5 GHz 2.4 GHz Signal Rate 11ac: Up to 433Mbps 11b: Up to 200Mbps Transmit Power <20dBm (EIRP) Wireless Rate Station Mode Wireless Security64/128-bit WEP,WPA-PSK / WPA2-PSK,WPA / WPA2 Certification CE, FCC,RoHS