Logitech MK540 Advanced Wireless Mouse and Keyboard 920-008671
Logitech MK540 Full-size Advanced Wireless Scissor Keyboard and Mouse Bundle Black 920-008671 - Best Buy
Amazon.com: Logitech USB Unifying Receiver - 2 Pack : Electronics
Amazon.com: Logitech USB 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
Logitech MK540 Advanced RF Wireless Keyboard and Mouse - Newegg.com