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

I was a little skeptical about this device because my Dell laptop (Windows 11) is recent but my Logitech keyboard is a K520, probably 7 or 8 years old (with the Unifying symbol). The instructions that came with the receiver are a little cryptic and the Logitech link provided for the software download did not work for me. However, I googled a little and did find a CNET download that took me through the process step by step. It works! And I can still use my older mouse (non-Unifying) with its own receiver.

Great to match my laptop to my cordless mouse

Works perfectly!! Plugged it into my windows 11 PC and my keyboard and mouse started working immediately and without effort. To the person who complained that the he could not understand the instructions because they were in Chinese....uh...they are in the universal language (see pix)...and they are simple: step 1: plug into your computer, step 2: download the app.

I thought I had lost my wireless receiver for Logitech M510 mouse, so I ordered a replacement. The M510 is listed as one of the items this receiver is compatible with. The item arrived in remarkable time, less that 24 hours from when I placed the order. I was impressed! Then, it did not work, and I was unimpressed. I thought maybe I had a battery problem, so I opened the battery compartment, and found my missing receiver. The person who had used my computer earlier in the day had helped me pack up after a meeting, and she carefully stored my receiver in my mouse. I normally leave it in the computer. So, my problem was solved, but not by the new receiver. I am not sending it back because I think that is just a waste of money for everyone. But I do not recommend this product.

Once I donwloaded unifying software from Logi website, connecting my keyboard and mouse was a breeze.

Bought to replace a lost dongle for K400r. It works but I had to install the Logitech Unifying software first and pair the keyboard to it.

Worked perfectly! Once I downloaded the software required on my PC while the USB was connected to my PC, it worked with no issues at all. I’ve seen that it’s not automatically known that in order to use this USB, you first need to download the software on your PC and install it while the USB is connected. This installs the software onto the USB so it can allow it to connect to whatever device the USB is connected to. But this is definitely the only way it works because it didn’t work at all until I followed those directions.

Quick shipping as promised and works like a charm. My only complaint was lack of written instructions for how to pair it with the existing mouse (I left my original dongle behind at an event). It took me awhile to figure it out - at first I thought it wasn't working. The little pictures were confusing and I didn't even realize they were "instructions" at first.