USB Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with All Unifying Devices Like Wireless Mouse and Keyboard, PC/Mac/Laptop - Black

Works great with logitech m525 wireless mouse. Just needed to go to logitech.com and repair it with the logitech unifying software. After I downloaded it it took me through the steps. It was easy. Awesome mouse too.

I lost the dongle for my K520 Logitech keyboard & mouse over 5 years ago and held on to the keyboard and mouse because I could not bare to part with it. Despite several horror stories of not being able to get a new dongle to sync properly with the K520 K & M and not being able to return, I took the chance! I am happy to report that I am currently typing on my old K520 keyboard and using my M310 mouse!!! It took me less than 5 minutes to download the Logi options + software and sync the mouse and keyboard. If you love your *orange star* Logitech keyboard and mouse and lost the dongle - this receiver will work! Buy it and get excited!!

Found a K400+ at Goodwill for $2 missing the receiver. Got this and paired it up near effortlessly. It's easy to use, has great range, and works with multiple Logitech devices, freeing up my other USB ports. It felt a little pricy, but still cheaper than a whole new keyboard. Plus it's a one-and-done, so can't complain too much.

I purchased this only to get an error 404 message when I attempted to connect it. After being on the help chat through the Logitech website for two hours, I was told that this is no longer supported, and that I would have to buy a whole different unifying Reciever. Now I am not able to get a refund even though I ordered it a month ago.

Good product, easy to connect and now i can use my mouse

I lost my previous dongle for my mouse/keyboard combo. This works great as a replacement. Only issue is there isn't a lip on the plastic part to be able to pull it out of the storage slot inside the mouse. This is only an issue when moving or storing it, but once I put it in, I almost couldn't get it back out. Usually the ones that store inside the mouse have a lip on the dongle to be able to grab onto it. You also have to install the logi software to use. Wasn't a big issue, but might be difficult for some corporate computers.

My wireless keyboard receiver went bad, it was easy to install with the Logitech software. Setup was easy and am very happy I didn't have to trash the keyboard

MUST download the software to pair any unifying compatible mouse that has an orange star. Google "Logitech Unifying Software". Not that hard folks, works great!!!!

Works well. Needs pairing with the device.

Picked up a cheap second hand ergonomic mouse that didn't come with adaptor. This paired easily with it and works without any concerns.

Buenísimo!!! Muy fácil de adaptar y configurar, funciona de maravilla, muy recomendable, hay que bajar el software a la computadora y listo, muy rapido

with my wireless logi keyboard. works nicely

It can be paired with any existing compatible device that has the same star symbol by using Logi Options+ software.