Original Logitech USB Receiver for Logitech Cordless Desktop Wave Pro M/n. Y-rbn90 (Keyboard), M-rcr147r (Mouse): Amazon.co.uk: Computers & Accessories
Logitech MX Master Wireless Mouse, Bluetooth or 2.4 GHz with USB Unifying Mini-Receiver, 1000 DPI Any Surface Laser Tracking, 5-Buttons, Amazon version, PC / Mac / Laptop - Graphite Black : Amazon.co.uk: