Amazon.com: Original USB Receiver for Logitech diNovo Mini Keyboard : Electronics
StarTech.com USB Bluetooth 5.0 Adapter, USB Bluetooth Dongle Receiver for PC/Laptop, Range 33ft/10m - USBA-BLUETOOTH-V5-C2 - Wireless Adapters - CDW.com
Logitech FreePulse Wireless Headphones - Headphones ( behind-the-neck ) - wireless - Bluetooth 2.0 EDR - black | Headphone Reviews and Discussion - Head-Fi.org
StarTech.com Mini USB Bluetooth 2.1 Adapter Class 1 EDR Wireless Network Adapter Add Bluetooth 2.0 with EDR capabilities to a computer through USB usb to bluetooth usb bluetooth adapter usb bluetooth dongle
Logitech Mx5500 Wireless Keyboard And Mouse Combo Usb Receiver - Keyboard Mouse Combos - AliExpress
OEM LOGITECH MX 5500 Wireless Keyboard USB 2.0 EDR Bluetooth Receiver Dongle $20.00 - PicClick
Generic 1pcs USB Wireless Bluetooth 2.0 EDR Receiver C-UV35 For MX5000 MX5500 DiNovo free shipping : Amazon.in: Electronics
Bluetooth FAQ
Logitech Wireless Keyboard/Mouse USB Receiver 2.0 EDR C-UV35 | eBay
Logitech C-UV35 USB Bluetooth Receiver for Mouse Keyboard MX5000 MX5500 | eBay
Best Buy: Logitech Bluetooth Cordless Desktop MX 5000 Keyboard and Laser Mouse 967558-0403
Logitech C-UV35 USB Bluetooth Receiver for Mouse Keyboard MX5000 MX5500 | eBay
Logitech MX5500 Keyboard USB Bluetooth 2.0 EDR Receiver Dongle P/N 830-000021 | eBay