Logitech MK540 Advanced Wireless Mouse and Keyboard Bundle with
Logitech Unifying Receiver - Wireless Receiver For Logitech Keyboard and Mouse - HDEtron.com
T+Ratón LOGITECH MK540 Wireless (920-008680)
Original Logitech Mk540 Wireless Keyboard Mouse Combos Mice Keys Set With Unifying Usb Receiver For Pc Laptop Office Game - Keyboard Mouse Combos - AliExpress
Logitech MK540 Advanced Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Unifying USB-Receiver, Multimedia Hotkeys, 3-Year Battery Life, for PC, Laptop - USB Wireless RF Keyboard - Black - USB Wireless
Logitech USB Unifying Receiver, Black | OfficeSupply.com
Memory Express Computer Products Inc. - Connect the Logitech MK540 Wireless Desktop Keyboard & Mouse all with one unifying receiver, with a wireless connection of up to 10 meters away without delays