Install CSR Driver For Advanced Features + Stability (More Than Just Bluetooth)
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User Manual
User Guide
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CsrBtService.exe Windows process - What is it?
How to Fix Bluetooth not working in Windows 10 (CSR USB not detected) - YouTube
Frequently asked questions - Sending and receiving files - CSR Harmony Help - Bluetooth USB
HarmonyUserStartup.exe Windows process - What is it?