Mini USB Wireless Mouse Keyboard Combo Receiver for Logitech MK220 MK235 MK250 | eBay
920-003161, Logitech MK220 Compact Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Wireless with Unifying USB-Receiver, Wireless Mouse, 24 Month Battery Life, PC/Laptop | EET
Logitech Unifying Receiver for Connecting Multiple Devices
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Logitech MK220 Compact Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Wireless with Unifying USB-Receiver, 24 Month Battery, Compatible with PC, Laptop, QWERTY UK English Layout - Black : Amazon.co.uk: Computers