Description Description Description: High Performance: V5.1 USB adapter adopts RTL8761B chip, V5.1, dual mode transmission, low power consumption. 100 meters long transmission distance (no barrier), strong signal. Stable Transmission Rate: Drive free adapter, 3Mbps transmission rate, providing high speed file and audio data transmission. Support System: Audio transmitter adapter for Windows 7/8.1/10/11 (for Win8.1 and above, free drive, plug and play) Strong Anti Interference Ability: V5.1 USB adapter, low latency fast link, intelligent sleep and wake up energy saving, 24 bit CRC check to resist interference, adaptive frequency hopping to reduce crosstalk. Wide Application: Drive free adapter is fully backward compatible with V2.0, V3.0, V5.0 specifications. Universal USB2.0 interface. Specification: Frequency Band:2.402G-2.480G Sensitivity:-86dBm@.01%BER RF TX Prower:+6dBm(Class I) Supply Voltage:5V DC(MAX5.75V) Working Current: Depends on profiles, 22mA typical Standby Current (Connected ): 0.4uA Material: ABS Plastic Product Size: 110mmx90mmx15mm Package Includes: 1 USB Adapter 1 Driver Disc Note: Please allow slightly errors due to manual measurement and different monitors.