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Bluetooth Adapter V4.0 CSR Dual Mode Wireless Mini USB Bluetooth Dongle 4.0 Transmitter for Computer PC 2.3 * 1.2 * 0.4cm
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CSR4.0 USB 2.0 Bluetooth 4.0 Adapter Driver / CSR Harmoney Wireless Software Stack v.V4.0, v.2.1.60.0 download for Windows - deviceinbox.com
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Amazon.com: Bluetooth CSR 4.0 USB Dongle Adapter, EKSEN Bluetooth Transmitter of Electronic Signals for Windows 10/8/7/Vista - Plug and Play on Win 8 and Above - White : Everything Else
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