TP-Link UB400 Nano USB Bluetooth 4.0 Adapter Dongle - Unboxing and Test - YouTube
My computer doesn't recognize my UB400 Bluetooth adapter properly - Home Network Community
TP-Link USB Bluetooth Adapter for PC (UB400), Bluetooth Dongle Supports Windows PC for Desktop, Laptop, Mouse, Keyboard, Printers, Headsets, Speakers, PS4/ Xbox Controllers - Bulk Packaging - 1 Pack - Walmart.com
Amazon.com: TP-Link USB Bluetooth Adapter for PC(UB400), 4.0 Bluetooth Dongle Receiver Support Windows 11/10/8.1/8/7/XP for Desktop, Laptop, Mouse, Keyboard, Printers, Headsets, Speakers, PS4/ Xbox Controllers : Electronics