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Combination WiFi + Bluetooth 4.0 USB Adapter : ID 4827 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Premiertek Dual Mode Bluetooth V4.0 USB Adapter with Low Energy Technology for Notebook Desktop Raspberry Pi (BT-400_V2) (bluetoothdongle-CSR4.0 1
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Bluetooth 4.0 USB Adapter, Costech Gold Plated Micro Dongle 33ft/10m Compatible with Windows 10,8.1/8,7, Vista, XP, 32/64 Bit for Desktop, Laptop, computers Bluetooth Adapters - Newegg.com
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