Bests & Worsts Reviews from Amazon

Note: This unifying receiver works as designed with unifying compatible hardware. This review is to notify everyone about the confusion between the two different types of receivers and hardware being sold, unifying and non-unifying, and how important it is to check your hardware before ordering a replacement receiver. In August 2014 I purchased the Logitech MK270 combo mouse and kb from Amazon. It all worked perfectly right out of the box. A few weeks later my son lost the the USB receiver, so I went looking for a replacement and found this on Amazon: New Logitech Unifying USB Receiver for Mouse keyboard M515 M570 M600 N305 MK270 MK330 MK520 MK710 MK605 Notice my MK270 is included. So I was confident this is the right replacement receiver and I ordered it. So the new receiver arrives, I plug it in, wait for it to see the mouse and kb, and nothing. Nada. So I start with the basics and change out the batteries in both the mouse and kb, Still nothing. So I try a different USB port. Still nothing. Then I try it on another laptop. Nothing. So then I start looking for solutions on the web. Long story short, I found that my MK270 mouse and kb will not work with a unifying receiver. Say what? After digging around a lot, I discovered to my surprise that my MK270 mouse and kb doesn't have the Unifying symbol, and are therefore not compatible with the unifying receiver. So I came to the conclusion that there must be two different MK270 combos being sold. One comes with a unifying receiver and compatible unifying mouse and kb, and one with a non-unifying receiver and non-unifying mouse and kb. Confused yet? Me too. I don't know if this is a marketing mistake or just an oversight on Logitech's part, but the fact there are two MK270 (and possibly more) combos being sold on the market with two different USB receiver types and hardware is going to mean a big headache and lots of confusion for consumers. So unless you are already very familiar with Logitech's wireless products, and especially the differences between their unifying and non-unifying hardware and compatibility, most people are going to make the same mistake I did when it comes to purchasing a replacement USB receiver, and then become frustrated like I did when they discover it doesn't work as expected. I took my time in typing this up and explaining at length in order to inform other consumers, and hopefully to prompt Logitech and resellers into making the necessary changes to their packaging and/or documentation. It's important to make it much clearer to consumers that there are two types of USB receivers being sold, and that some hardware will not work with the unifying receivers. Bottom line and message to everyone: Before buying a replacement USB receiver, check your wireless hardware to see if it has the Logitech unifying star symbol on it. If it doesn't, it's not going to work with a unifying receiver.