When Logitech manufactured the MK270 Keyboard & Mouse they made 2 versions. The earlier version uses the Unifying Receiver (Look for the Unifying Logo on the bottom of your keyboard & mouse). The newer version uses the nano receiver (which looks identical to the unifying receiver but no unifying logo). If you have the newer version it will be hard for you to find a working receiver because there are also 2 different versions of the nano receiver (single device and dual device). What you need is the dual device nano receiver, purchasing one on ebay is like a 50/50 crap shoot. Don't take any chances, get it from us and it's guaranteed to work! The receiver I have in stock is guarantied to work with your MK270 keyboard & mouse (newer version). Why? Because these are pulled directly from comp.
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