Dongles

USB Bluetooth Dongle . . . more about CB-715 Bluetooth USB Dongle

Logitech 910-005239 USB Unifying Receiver
* Ideal for use with a Unifying mouse or keyboard
* Incorporates Logitech advanced 2.4GHz wireless technology
* One receiver for up to 6 Unifying devices
* Compatible with all Logitech Unifying products
* Lightweight and portable
. . . more about Logitech 910-005239 USB Unifying Receiver, OEM Packaging

TP-Link Bluetooth 4.0 Nano USB Adapter
* Bluetooth 4.0 - Applies the latest Bluetooth 4.0 with low energy (BLE) technology
* Backward compatible with Bluetooth V3.0/2.1/2.0/1.1
* Driver Free - Plug and Play for Win 8, Win 8.1, and Win 10
* Nano-Sized - Ultra-small for convenient portability with reliable high performance
* Supported Operating System - Supports Windows 10/8.1/8/7/XP . . . more about TP-Link UB400 Bluetooth 4.0 Nano USB Adapter

TP-Link UB500 Bluetooth 5.0 Nano USB Adapter
* Bluetooth 5.0 – Applies the latest Bluetooth 5.0 technology, backward compatible with Bluetooth V4.0/3.0/2.1/2.0/1.1
* Wireless Connectivity – Provides stable and convenient communication between Bluetooth devices and your PC or laptop
* Nano-Sized – Ultra-small for convenient portability with reliable high performance
* Supported Operating System – Windows 10/8.1/7
. . . more about TP-Link UB500 Bluetooth 5.0 Nano USB Adapter