Multi-Device Wireless Mouse - MS5320W, Gray

Same mouse that's in Dell KM7120W bundle. Had to replace my mouse within this bundle and this was perfect. Was easy enough to pair keyboard to the new USB dongle that came with new mouse.

Workes very well if you enjoy a mouse and I do. Matched to Dell laptop.

I had MS5120W which I found very useful and now I ordered MS5320W for my second notebook. So far so good. What I like the most is that I can use the plug in connection for my desktop pc and bluetooth for my notebooks.

Perfect fit for my palm - easy to connect to various computers, although it sometimes loses connection and needs to reconnect.

Excellent mouse. I love it!

Love this mouse. So many mice on the market are too small (made for a baby hand). or so large, uncomfortable and over priced I'm glad I found this, perfect size for my hand for my desktop. I use this on my iMac. I would prefer this was rechargeable battery. I use it daily and haven't had to replace the battery yet. If I have to replace the battery once a year, i'll be happy. I also find that the scrolling wheel is a little sensitive to dirt. I have had a coupe times where the wheel doesn't work, a through cleaning and it works again. I hope the next iteration takes this into consideration and better designs a "dirt resistant" center wheel.

The item that was sent to me was far from new. There were some marks on the top surface which I cleaned off, but then I noticed the bottom surface was extremely worn, the center part around the light having been worn to an irregularly shiny surface, whereas the rest of it was matte (as it should be). This mouse has been extensively used -- at least the body has been; and I bought what was supposed to be a NEW mouse!

Was looking for a multi-device wireless mouse. Surprisingly, there're not that many models at any price point, specifically very few of them have a device 1-2-3 button/toggle immediately accessible on the surface of the mouse (the often have it at the bottom instead!). Originally purchased a Logitech mouse, but experienced many issues, worst of which was lag in both the mouse pointer and the scrolling wheel. Returned it and purchased this one instead. This mouse is outstanding. Can be paired with a Mac without any additional software (special buttons like left/right clicks of the scrolling wheel will need extra drivers/software, but I don't use them). I'm constantly switching between 3 MacBooks Pros and it works instantaneously without any lag when connected via either Bluetooth or the dongle. Highly recommend this mouse for Mac users!

The Dell Multi mouse uses a mechanical encoder for the wheel. A mechanical encoder uses metal contacts which get worn and dirty through use and sooner or later will start to send erratic signals to the mouses processor so you get erratic movement on your screen when you roll the wheel forward or backward. Mine started failing after one year so I opened it and cleaned and re-lubed the contacts. Its working again. Dell should have used an optical sensor.