After dropping my old wireless too many times I needed a new one. I found this one that works great and I love the lights. it works perfect and if I need light on my keyboard it helps too. Auto-off saves battery life as well.
I bought this (and the others) because I thought my old mouse had died. After I ordered it I checked my old mouse on a different port-it worked just fine. This means that either the USB hub or the USB extension is flaky. I believe strongly in back up so I'll keep the mice I ordered.
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