LogiLink BT0015 USB bluetooth V4.0 EDR Class1 Micro, CSR Chip https://www.amazon.de/dp/B0096Y2HFW/ref=cm_sw_r_cp_apa_TVGMybGX7ES7A
I bought this one. As I wrote it works better than the integrated one, but still, not close of beeing satisfactoraly. Streaming buffer is one issue, the other one is that echo dot sometimes looses Connection. In Orange Squeeze I then push play for that device again and streaming continues.Very annoying.