Nulea M509 Trackball Mouse Wired, Ergonomic Design, Easy Thumb Control, Precise & Smooth Tracking, 2-in-1 Interface (Type A &Type C), Compatible for PC, Laptop, Mac, Windows(Red).

I would purchase again if needed, and recommend. I am new to trackballs. This is my second trackball. The first one I bought was a logitech M575. I got it to go with a laptop because sometimes you find yourself in situations where a mouse is harder to use / no good surface to move it on. It takes just a little bit to get used to moving your thumb instead of a mouse. I enjoyed the experience and wanted a wired trackball for my desktop. This device in comparable in size and layout to the logitech M575. Like a larger mouse, it more comfortably fills a medium to large adult hand. The ball is the same size and weight as the M575. The narrower right click button is actually nice for me, as I can move my middle finger off of it so I don't accidentally click it. Both mouse buttons feel (not measured) about twice as stiff as the logitech, so I don't have to focus on holding my fingers completely off of the mouse buttons to avoid accidental clicking. (This can become a thing as we age and the tendons get just a little tighter, remember to stretch your finger tendons from time to time.) The top of the body of the device has a soft rubber / silicone coating. There are rubber feet to keep it from sliding around on the desk. The cord is plenty long enough for most situations, and has a soft rubber / silicone insulation. It is not quite as flexible as really soft silicone stranded wire, but it is much nicer than the bog standard vinyl / plastic wire and a very nice surprise. The usb c to a adapter seems good quality, but it has just a tiny bit more give than I would like to see. I don't think it will be a problem, but I would recommend a little care not jerking the cable around and when plugging / unplugging. i run linux, and everything is working great. lsusb shows the device as Holtek Semiconductor, Inc.

I bought this mouse because it was wired, and closest in shape and size I could find to the Logitech M575. (The M575 mouse is ergonomically perfect in my hand.) Having a wired mouse meant not having to worry about batteries, not connecting to the dongle, or loosing the dongle. The mouse is a little large, but I can deal with it. It was completely usable, just always a bit uncomfortable. Then after 3 months, the left mouse button started acting up. It was not bad at first, now it is a total nuisance, and I am tired of it. Double and triple clicking to achieve what should have been a single click. I expected to have better than 3 months use without issues. I am going to look for another wired mouse, but most likely something different. Had this Nulea mouse been more ergonomically comfortable, I might have just ordered another one and hoped not to have the same button issue. If not, I will go back to my Logitech M575. *** UPDATE *** It was only recently that I wrote and posted my review. Nulea contacted me not too long after seeing my review. They were very apologetic for the failure of my trackball mouse and offered a full refund of the purchase price. I thanked them for the generous offer, and that I would just as soon prefer having another trackball mouse sent as a replacement. I ask if they would consider doing this opposed to a refund. They agreed and sent a replacement which I received in a few short days. The new trackball mouse works great. I am hopeful this one will outlast the original. But even if it does not, I am quite pleased that Nulea took the time to contact me regarding the button issue I had with my original trackball. So the next time I am looking for a trackball, wired or wireless, I will give Nulea a first look. Thank-you Nulea for actively delivering such wonderful customer service.

Works great as a replacement for my old trackball. I appreciate being able to use my thumb to control the ball, because thumbs have strong muscles that can move the thumb in a variety of directions. The port adaptor is a nice addition, allowing choice of a Type A or Type C USB port.

This arguably has the smoothest ball of the wired trackballs. It's certainly better than the ProtoArc and Perixx. Buttons are quiet and work well, but I can't comment on longevity yet. The USBC with a USBA adapter is a nice touch. I removed a star because the dpi button is...stupid. It has FIVE dpi settings that you have to toggle through. FIVE. Let's see, I need to get to low mode...click-click-click (not there yet) click-click (dang it, I passed it!). Seriously, this is just idiotic advertising where you can say you have FIVE dpi settings while those other trackballs only have two or three (which is what you actually want). The light doesn't change color for dpi mode either: you have to count the blinks after you press it. Be prepared for pain if you accidentally press the dpi button. The developer certainly didn't use this feature. Anyhow, if you avoid the dpi button, then this is a fine trackball. If you do use it, then this will drive you insane.

High quality product with reasonable price that I bought it twice! I have had the first one at least 6 months now and it is still working just as great as when I first used it. Now I have one for home use too. This time i didn't even know that the trackball was removable until I looked at the instructions lol It's very easy...when you turn it over, on the back, there is a button that you push and it pops right out so it is super easy and efficient to clean. I bought the one with the purple trackball and it's such a pretty color and I love the shine. The size is perfect for my hand and I have had no issues with cramping or carpal tunnel, etc. plus I love the button placements as it makes it easy to locate and also the mouse is lightweight but not flimsy at all. The cable is also a great length that I'm not having to rearrange PC tower placement, etc. oh and btw, it doesn't click loudly so it's not annoying like other mice. However I am not sure about the negative reviews about the trackball speed because you can easily change the mouse settings on your PC (I use PC). I have adjusted the speed on my Windows settings and fast or medium speed works great either way. The importance thing is that it IS super responsive and not laggy at all.

This mouse is very reliable and comfortable. I got it a couple of weeks after starting my job because the top of my forearm would get sore from using a standard mouse. I have now been with this mouse for 5 months and have not experienced pain since. The mouse itself remains stationary so it works great in tight spaces. One thing that I would recommend is to upgrade the scroll wheel. I would definitely pay extra since this one is durable and there's not many of the that are wired.

First off, I'm a huge fan of trackball mice. Coming from a history of four surgeries to address carpal tunnel, cubital tunnel and tenosynovitis...I take my touch-related computer accessories very seriously. That being said, let's get to the review. It has a smooth, matte surface and doesn't feel slippery or grainy beneath the fingers. The ball itself--while not being loose, per se--takes almost no effort whatever to shift and glide the cursor where you need it to go. Plug and play dynamic; so, within seconds of jacking into a USB port, I was ready to rock. Heh, the cursor zoomed away with rocket speed, BUT a quick press to the central button adjusted the DPI settings precisely where I needed it to make the speed my own. I loved that I didn't have to go into mouse settings to achieve this: just press the button to adjust. Also, the connecting cable is wonderfully long, and I had plenty left over after jacking into my desktop. It was a little much with my laptop, and for that I think I'd venture into the same brand for a wireless version, with the same expectation of quality. When you pick up the mouse, it has a small bit of weight to it, giving it an air of stability. This keeps it from shifting and sliding across a desk or mousepad, which is precisely what I bought it for: to stay put beneath my hand. However, when you pick it up, it does jiggle a bit--the ball shifting in its cradle--and I wouldn't put a lot of faith in avoiding damage if it were dropped. So, simple solution. Computer equipment isn't meant to be dropped. All in all, for the low price, I was expecting a throwaway temp to get me to a pricier, more solid model. I was wrong, so very wrong, and I'm thrilled because of it. This is a great mouse for a great value. If you've never tried trackballs, learn from the four-time surgery veteran: give them, specifically this one, a try.

Seems like a weird thing to have a problem with, but it doesn't work with a KVM switch. Sure, plug it in and it just works immediately. The DPI switch is a nice feature if a bit awkwardly placed, but if you switch the KVM to the next machine the ball portion locks and won't re-engage until you unplug and plug it in again. The cursor will just stay wherever it was when you switched inputs. It is light and very responsive though so it should find some use as a travelling mouse.