csr 4.0 bluetooth adapters usb dongle receiver pc lapcomputer audio wireless transceiver support multi devices

convenience - plug and play (please try to install the driver if can't just plug and play), enables your pc or lapto wirelessly communicate with bluetooth-enabled devices, like smartphones, tablets, keyboards, mice, speakers, printers, headsets and more support bluetooth data transmission and reception ultra-compact, easy carrying and space saving support profile: serial port, object push, file transfer, lan access. does not work with keyboard / mouse accessories based on 2.4g wireless technology