Bests & Worsts Reviews from Amazon

**UPDATE** A couple of weeks later, I have already returned this product and knocked a star off of my review. Even with the USB receiver within sight of the mouse & keyboard, there was so much lag that I just couldn't work with it. I replaced it with a wired mouse and keyboard. **ORIGINAL REVIEW** This combo was working fantastically when I set it up, right up until today when I got a couple of hours into work and the keyboard basically stopped working. I turned both mouse and keyboard off, replaced the batteries, and disconnected then reconnected the USB receiver. Still having the same problem. The mouse works wonderfully but the keyboard is non-responsive. I started searching Amazon for another product, wanting to stick with Logitech but thinking maybe I should just get something at a higher price point. In a review of a similar Logitech product, someone explained that they had the same issue but corrected it by placing the USB receiver within sight of the keyboard and mouse. So, I tried this and it has seemed to fix the issue. (I have my monitors on my desk with the keyboard & mouse, but everything is run through my laptop which I had stored under the desk. I moved the laptop to the top of my desk.) It's all working fine now, but I'm still only giving three stars because this is not ideal. I'll continue to use this for now, but will be replacing it in the near future so I can have my desk arranged the way I prefer it to be. Prospective buyers.. be aware that you will likely need your equipment arranged in a way that allows the USB receiver to be within sight of the mouse and keyboard (so if you have a computer tower that's stored under your desk and would be difficult to place elsewhere, you'll probably want to go with something different)