Logitech ERGO M575 - trackball - 2.4 GHz, Bluetooth 5.0 LE - graphite - 910-005869 - Mice - CDW.com
Amazon.com: Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
Unifying Receiver 1 to 6 Devices USB Wireless Keyboard Dongle Mouse | eBay