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).

This is a really nice trackball. It's responsive comfortable on the hand and super easy to use. Good value for the price.If you are still using a mouse, you don't know what you are missing. This one even has a special button to adjust the rate of travel of the screen pointer.

I love this trackball, It is more comfortable than the Logitech it replaced. Seems compatible with everything so far. It has extra button features (eg: DPI change, webpage forward and back), plus scroll wheel is quiet and smooth. Definitely a Trackball I would recommed.

Easy to use. It does not need a lot of desk space as your thumb controls the movement. The two buttons allow for easy access. But the best is you can use it on two different machines easily.

This is the 2nd trackball mouse by Nulea that I have purchased so far this year. They are built to be very solid and they work very well. I bought the wired one this time around since I have plenty of USB ports available and it stays on the same desk. The other one is wireless and can connect to many devices, which I never make use of. The DPI can be set with a button click on the top of the wired one, which is great to adjust the movement preciseness as needed. I bought this because my Logitech M570's left click button stopped working properly, and I have yet to notice any issues while switching to the Nulea brand. I think it's a great value for the price, which was about $24 USD at the time of purchase.

Like the headline says, I couldn't be happier with this mouse. Unlike other trackball mice, the action on this one is smooth and accurate. The middle wheel works like it should, where others had a tendency to move my screen in the wrong direction. The size is perfect for any hand. And it's textured so it is easy to grip. Best of all, the USB A connector slides off, to reveal a USB C connector underneath, without disconnecting entirely from the device. This frees up one of my USB A ports, allowing me to connect more devices to my laptop, while still being able to use the mouse. If you aren't a fan of wireless devices, this mouse is perfect. Highly recomend!

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.

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.