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.

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.

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.

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.

Price was awesome and it works every bit as good as the higher end trac ball mice.

A good little wired ball mouse. Got this to use with a chromebook I use to run an online dart set up. Got fed up charging up the wireless mouse I was using. This mouse works fine for what I need and wasn't to expensive.

tres bien

The micro switch for the pointing finger is way to course you really have to PRESS to make contact. Which means you often have to press multiple times to get it to react! Not so great!

Very good, even if is not Logitech.