Features:1.With the latest Bluetooth 5.3 + EDR, Transmiion distance ( 328ft/100M. ), faster data rate ( 3Mbps), and lower power consumption; Backward compatible with Bluetooth 5.0/4.2/4.1/4.0/2.1/2.0 Dual-mode Bluetooth transfer, compatible Help your old desktop add wirele Bluetooth function to connect more Bluetooth devices such as: mouse, keyboard, headphones, headset,speaker, printer, etc. ( Not compatible with Mac, car stereo or TVs.).2.This USB Bluetooth dongle with 2dBi external antenna, long range wirele transfer can up to 328ft/100M. ( Note: Operation range can be affected by physical obstructions and wirele interference.)3.Install Driver Tips : First install the driver, then plug this usb Bluetooth adapter into your PC.Material:ABSColor:blackSize:15*1.9cm/5.91*0.75inPackage includes:1*Bluetooth adapterNote:Please allow minor error due to manual measurement.The colors may be a little difference for the different monitor display. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia