USB Unifying Receiver 2.4 GHz Wireless Technology - Black | USB plug, works with all Unifying compatible devices like wireless mouse and keyboard, PC, Mac, Laptop

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!!

When I purchased a new mouse, I had a brain cramp and discarded the packaging with the receiver in it. I’m pleased that this is sold separately because it’s such a small part and I would imagine I’m not the only one who has ever lost one. Lol! It works like a charm.

I used this for my M570 Track Ball Mouse. The original one got damaged because I had left it in the computer and it kinda got bent and was never the same since then. I had downloaded the Logi Options+ the night before. When it arrived I opened the app. I clicked Add Device. I then inserted the USB into the computer. Then it asked me to turn the mouse off and then on and it connected. Super easy no problem at all for me. Yes I would recommend this product.

I received this usb. Excited that finally I can connect all my stuff. Unfortunately it didnt work. Not sure if it was faulty. But if it sounds to good to be true it probably isn't what your going to get.

The item is a USB Unifying Bluetooth receiver for any Logitech device that has the Unifying icon (which resembles a 6 point black star in an orange background, although to me it looks like a black sprocket). I bought this item so I could use a Logitech M560 mouse that I had lying around without its dongle. At first, the item was not recognizing the device, but a little research in the Logitech's website for product M560 provided a driver for Windows 11 for the dongle, which worked perfectly. The only issue I have with this specific device is that the black knob is too small for a good grip and so it requires some effort to remove it from the laptop on which I installed it, because it's one of those thin-line laptops that have a jaw (like a mouth) in each USB 3 port which makes plugging in USB devices a pain. But other than that, it was great value for the money.

it connected to my Logitech keyboard but it is really power consuming. you have to turn off your keyboard or remove the batteries or you will be changing batters every week.

I absolutely love my Logitech K350 keyboard, but lost the dongle when I moved. Logitech doesn’t produce it anymore, so people are selling it online for hundreds of dollars. I had almost given up when I stumbled on this. This is a lifesaver!

Great item! Exactly what I needed! Great value for the price!

Had to buy it separately from compatible hardware good to have the ability to buy replacement receivers in case one gets lost

Works great. Remember this isn't plug and play. You need to go to the Logitech website to pair your device to the dongle. If you have a Mac there are some extra (kinda annoying) security sets you have to do, but it walks you through it. Was able to pair an old MX Performance mouse to a MacBook Pro.

Perfect! Works well, easy to install with the app (literally less than 5 minutes) 👍🏻👍🏻👍🏻

Funcionou muito bem!

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