Perixx PERIMICE-520 Wired USB Ergonomic Programmable Trackball Mouse, Adjustable Angle, 8 Button Design, Black (PM-520-11447)

I received it and plugged it in and unplugged my old Logitech trackball. touching it the pointer FLEW across both monitors. I use a 32" and a 40" UHD TV/monitors. I tried use the trackball and pointer was racing all of the place. very difficult to control. I tried the DPI switch and no difference. Have no real idea what the DPI switch is supposed to do. I eventually was able to work it over to the Control panel and select the Mouse controller.I had to slide or move the pointer speed and tail to "Dead slow" I also changed the wheel Horizontal and vertical page rates too. Once i got it set up it has been awesome ! Very quick response, smooth, and precise. I can quickly place the pointer exactly where I want it.I had terrible problems and issues in copy and paste using the mouse and other related things. ALL of my problems I thought might be with the old mouse and computer. I found to be with the old mouse. This mouse makes all of those tasks effortless.The things I was trying to do were becoming tedious and harder to do. This mouse makes everything FUN again. Have not figured out the ergonomics things yet. Trying flat and then with the tilt supports. Using both is too much. the taller one is kind of awkward at times. With the smaller one my wrist is straight and not bent. Comfort is great.I very much recommend this mouse.

I bought this because I couldn't find a wired version of the Logitech thumb trackball (M575), as there seems to be some wireless interference at my location. The Perimice-520 is comparable to the Logitech M575, with an extra button between the two main ones. It includes a couple of plastic insets that add lift and angle; I don't use them but they do fit snugly.Much like the M575, it's great for ordinary tasks, and is more comfortable than using a mouse. Very little thumb movement is required for crossing screen real estate. However, this same advantage makes it awkward when you need pixel precision, such as aiming in a game.Perixx software is provided for assigning actions to buttons, adjusting sensitivity and so on. There's a macro feature for creating reusable actions. The software interface lacks polish but it works fine.The first one I bought had a gradually defective scroll wheel. Customer service promptly replaced it with about a one week turnaround between my first communication and product delivery at my doorstep.

A wonderful mouse! I’ve been using it for over three years at my job, and today it’s an essential part of handling my tasks. The wireless version I own is excellent, but it has one flaw: there is no sleep mode. The mouse stays on all the time, which drains the battery quickly. I have to turn it off manually every time I finish working to ensure the longest battery life. That’s why I’ve now purchased the wired version. It’s a product worthy of praise and appreciation. Thank you!

I bought this just so I could leave a verified purchase review and ask Perixx to bring back the 718, which was the pinacle of mouse-design. Here is my review of the 718:came here 5 years later to say the 718 is the best mouse ever designed. Wrist pain never came back, and the big grip in the back is so helpful. I can push it with the thumb muscle in my palm, and it's a nice place to set the curve of my first thumb joint.The rubberized grip should have been adopted by every other vertical mouse-maker years ago. Plastic mice are disgustingly slippery, making finger and claw-grip usage extremely unpleasant, and not even an option. I have found that I naturally switch between grips, myself.Another diamond-in-the-rough aspect of this design is the fall-off of the buttons toward the top of the mouse. When I need a really precise click, my brain has made it second-nature to push my click down from the tip of my finger. I don't have those gun-trigger type misclicks like in other verticle mice, where the pressure from the click itself moves the mouse sideways just enough to make you miss what you are trying to click on.I really wish they would bring this design back in all black and with silent clicks.OH, and another thing is the little wing on the bottom. When I am using a palm grip on the mouse it is so nice not to be dragging the side of my palm on my mouse pad or desk, drying out my skin. Other vertical mice do that to the side of my hand, and it is very unpleasant.This thing needs more recognition and needs to be put in production again. I need a wired one for the lab, on for the office, and a another just in case my main one brakes.