COMFAST CF-B03 USB Bluetooth 5.1 Adapter ($9.99)

Not made by elves, but still magical: $9.99 (Banggood). Updated: 12-01-2026.

COMFAST CF-B03 USB bluetooth 5.1 Adapter Free Driver 2 in 1 bluetooth Receiver Transmitter for PC Phone Tablet
Banggood warehouse: China.

Price: $9.99

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Aliexpress

There’re some similar (or not) items on Aliexpress

Image	Product (link)	Price
	Comfast 150Mbps USB WiFi Bluetooth 4.0 Adapter 2.4G Network Card Receiver RTL8723DU BT Dongle PC/Laptop/Desktop Win7/8/10 11	$5.91
	COMFAST 650Mbps Mini Wireless Wifi Adapter BT4.2 USB 2.4G/5.8G Bluetooth+WIFI Network Card RTL8821CU WiFi Antenna For PC CF-813B	$11.02

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