MakerSpot CC2640 Bluetooth Low Energy BLE 5.0 USB HID Dongle (Backward compatible with BLE 4.0 / 4.1 / 4.2) - MakerSpot
USB Bluetooth Adapter for PC, QGOO Mini Bluetooth 5.0 EDR Dongle for Desktop Computer Wireless Transfer
MakerSpot CC2640 Bluetooth Low Energy BLE 5.0 USB HID Dongle (Backward compatible with BLE 4.0 / 4.1 / 4.2) - MakerSpot
GitHub - houkanshan/arduino-bt-hid-proxy: Bluetooth HID proxy is implemented using Arduino. Make a Bluetooth keyboard or mouse (WIP) work in BIOS or device without BT stack (e.g. TMK USB to USB Converter)
Amazon.com: MakerSpot CC2640 Bluetooth Low Energy BLE 5.0 USB HID Dongle (Backward Compatible with BLE 4.0/4.1/4.2) : Electronics
Amazon.com: MakerSpot CC2640 Bluetooth Low Energy BLE 5.0 USB HID Dongle (Backward Compatible with BLE 4.0/4.1/4.2) : Electronics
Usb Port Module High Speed Bluetooth 5.0 Usb Module Support Hid Ble Wireless Iot Data Transmission - Buy Bluetooth 5.0 Module,Usb Port Module, Bluetooth Ble Modules Product on Alibaba.com
The crux of finding a HID proxy-capable USB bluetooth adapter – 0xf8.org
Plugable USB 2.0 Bluetooth® Adapter – Plugable Technologies
USB HID Bluetooth変換アダプタキット USB2BT | Bit Trade One, LTD
USB Bluetooth 4.0 Dongle Adapter for PS4 Wireless Audio Receiver Transmitter | eBay