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

Why did you pick this product vs others?:I picked this product because it was rated highly and it was shipped by Amazon with a 30 day return window. Similar item was being offered by another seller for a cheaper price but did not have a return policy. It works perfectly with our Logitech K540 keyboard. As other reviewers have mentioned, the Logitech Unifying Software needs to be downloaded for the receiver to work with the keyboard. Some reviewers have stated that they could not install the Software but it worked for us.

I lost my last one, this was a great replacement

Why did you pick this product vs others?:works great!

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.

Works perfect,

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.

Compatibility:Value for money:S

Bought to replace the original-to-my-mouse that I lost. Being able to connect 6 different devices was an added bonus. Easy set up and I love the expanded connectivity options.