Nsinc Trade Mini USB Wireless Bluetooth CSR 4.0 Dual Mode Adapter Dongle Driver for for Computer PC Laptop V4.0 Blue Tooth Adapter. (RTT-ADP-0027)Please note: Bluetooth is also particularly vulnerable to other wireless interference. For example, wifi signal, wireless mouse, and Bluetooth are the same frequency, etc.When you are enjoying streaming music wireless, this USB Bluetooth adapter supports for excellent audio quality, there are no drops in quality as the signal is very stable, and this adapter makes use of the powerful Low Latency technology to get rid of annoying delays that ruin the fun. USB Adapter  (Black and gold)