Sennheiser BTD 504 190 USB Network Adapter (Bluetooth 3.0) (Accessories)
I've tried 3 adapter: Azio BTD V401, this, and Avantree Priva. This is the best. Azio benütigt a software, CSR Harmony, which is problematic, full of bugs, and end of life, that is, without support. Azio Customer Care is absolutely Sch ... e. CSR als