What Is a Bluetooth Dongle & How Do I Use It?
Bluno Link - A USB Bluetooth 4.0 (BLE) Dongle - DFRobot
Bluetooth Transmitter/receiver - Heyday™ Dusk Blue : Target
The VUBT2 allows you to get Bluetooth 4.0 ability without needing a Bluetooth head unit. The VUBT2 has an IPX6 water resistance rating, so it also eliminates the need for a Marine head unit. The VUBT2 is easy to install, and comes with everything you need.
NVX VUBT2 Universal Waterproof Bluetooth 4.0 Audio Receiver for Cars / Motorcycles / ATVs & Marine / Boats
Cable Matters USB Bluetooth Adapter (USB to Bluetooth 4.0 Adapter) for Windows 10/8.1/8/7/vista/xp, Raspberry Pi in Black
USB bluetooth adapter for PC added BT capability to an older computer or replaces a failed BT card Bluetooth audio adapter connects to a BT speaker,
Cable Matters USB Bluetooth Adapter (USB to Bluetooth 4.0 Adapter) for Windows 10, 8.1, 8, 7, Vista, XP, Raspberry Pi in Black
USB Bluetooth 5.3 Adapter for PC / Laptop
USB Bluetooth 4.0 Dongle Class 1 + EDR adapter - Bluetooth - Bluetooth - PC and Mobile
Mini Bluetooth 4.0 (Class 1) USB Adapter
USB Bluetooth 4.0 Micro Adapter for PC [v4.0 Class 2 with Low Energy T - Sabrent
Cable Matters USB Bluetooth Adapter (USB to Bluetooth 4.0 Adapter) for Windows 10/8.1/8/7/vista/xp, Raspberry Pi in Black
US Bluetooth 4.0 Headset Dongle USB Adapter Receiver Black for Playstation 4 PS4
Plugable USB 2.0 OTG Micro-B to 10/100 Ethernet Adapter – Plugable Technologies