CSR 4.0 BLUETOOTH ADAPTER PROBLEM SOLVED | Solved That!
Jan 31, 2018 · Cambridge Silicon Radio CSR 4.0 USB Bluetooth Dongle. My research on Amazon showed me that there were many USB Bluetooth 4.0 Dongles to choose from, and many seemed to be re-branded CSR 4.0, so I bought the one that was actually branded CSR 4.0 for about $12, and in two days, Amazon prime had it in my hands. Installing the CSR 4.0 USB Bluetooth ...
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