Interface: USB2.0 Dimension: 48mm*20mm*8mm (L x W x H) Antenna: 1* 6dBi external antenna Wireless Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n Frequency: 2.400~2.4835GHz Transmit Power: <20dBm (EIRP) System Requirement: windows10(32/64bits),Windows 8.1(32/64bits), Windows 8(32/64bits),Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits) Certification: CE/RoHS