Logitech MK540 Advanced Wireless Mouse and Keyboard 920-008671
Logitech MK540 Advanced wireless keyboard and mouse review: Snappy typing, no noise | PCWorld
BRAND NEW! 3x Sets of Logitech MK 540 Wireless Mouse & Keyboard Combo | eBay
Amazon.com: Logitech MK540 Advanced Wireless Keyboard & Mouse Combo Travel Home Office Modern Bundle with Boost Water-Resistant Portable Wireless Bluetooth Speaker, Gel Wrist Pad, & Gel Mouse Pad : Electronics