Dell Genuine M534D Silver Premium 6-Button USB 1600 DPI Laser Scroll Mouse, Compatible Part Numbers: K251D, M534D, Y357C, Model Number: M-UAV-DEL8

As far as I can tell, this is a brand new, still in the wrapper, genuine Dell laser mouse. NOT used. NOT a knock-off. The instruction sheet is included. I tested it using the DeviceTests website, and all 6 buttons, as well as the scroll wheel have a bounce-free, flawless performance. The DPI switch and indicator are fully functional as well. My Windows 10 PC recognized it instantly and loaded the appropriate driver. Of course, everyone has their personal preference for the shape of a mouse, and no doubt some users will not care for the shape of this mouse. But I am fully satisfied with the shape, and performance of it.

This is a great mouse and at a great price! We have these all over the office and on the shop floor.

The mouse came packaged like it was new, however it was not. First thing is it doesn't work! Second, the scroll wheel was all sticky, there was dirt in between the pieces of plastic and when you turn it over, it's obvious that it is not knew due to the wear marks on the pads. Amazon's service has gone into the tank as well. They take no responsibility for anything anymore and somewhere along the line, hide the details so that you are stuck dealing with a "seller" and are required to ship back the product to them! Amazon has gotten too big and has lost their way.

The Dell 6 button USB laser mouse has some great features for a $10-15 mouse. In fact, you'll be hard-pressed to find a better deal in that price range. This is a big chunky mouse and has a DPI button with 4 speed settings. If like me you're moving from an optical to a laser mouse, you might be irritated by how sensitive laser mice are. Even adjusting the settings in Contol Panel/Mouse don't seem to help in my case. Also, if you're used to a small/notebook sized mouse, you'll want to get something smaller.The scroll button alone almost seals the deal; it is smooth as butter and sized very large; the quality of a midrange mousewheel for a budget price. The body design doesn't seem ergonomical with 3/4 of the mass on the back end. If you use it on anything but a flat solid surface , you'll find your wrist partially resting on the back end and it will start to tilt upwards. Without pressure from above pushing the mouse down on a 100% flat surface, the weight won't be distributed evenly and you won't have enough accuracy or precision. Even holding the mouse properly, sometimes your wrist will accidentally push the mouse slightly forward. The Page back and Page forward buttons are well placed and don't get in the way.Why 3 stars instead of 4 or 5? The dreadful right&left click buttons. Simply put, they are WAY too soft and sensitive, which leads to countless single-clicks becoming double-clicks. Changing Mouse doubleclick settings won't help. Strangely enough, many cheap mice have solid clickers and terrible scroll wheels, but here it's the other way around. Be aware of this clicker sensitivity problem with many newer models like this one, because it's very annoying. In summary:PROS:great valueExcellent scroll wheelDPI button with 4 speed settingsWell-placed back & forward page buttonsCONS:over-sensitive right&left click buttons (single=doubleclick issues)chunky non-ergonomical shape

In the beginning it worked fine for a couple of months but now the cursor jump all over the screen and the mouse lost the precision it used to have when it was new. If you give it a puff of compressed air it will improve for a couple of days but then you need to give him another puff. I would not recommend it. It is cheap but not worth the money