C-U0007 Unifying USB Receiver for Mouse and Keyboard, Connects up to 6 Devices

This USB receiver worked perfectly! It connected my keyboard just as it was supposed to and was super simple to set up! No more small laptop keyboard for me!

Lost my keyboard receiver when I left it on a remote computer. Ordered this replacement after confirming on the Logitech website that it would work with my K400+ keyboard and trackpad. Received dongle and plugged-in. It did not work right out of the box. I read the very tiny info sheets that came with the receiver to no avail. Finally Googled and went to the Logitech website. For a Mac computer, you can program the receiver via software that you can download. I really wish Logitech had better instructions with the receiver and on their website. But, in the end works great - even at 1/2 the cost of a new keyboard, lol.

This will not work for a Logitech mouse. It is smaller than the one I wanted to replace. Cannot be returned. All instructions and wording on packaging is in Chinese. Don’t waste your money and buy it. There is no return on this item. Worst purchase I have ever made on Amazon, highly disappointed.

Product works super well! Compatibility with my Logitech Mouse was great! Very easy to use and pair with your device. Simply make sure that your device and the receiver have the same tag before buying this product. Also, download the app for the Logitech Unifying Software first before you get this product!

Works fine. Pairing multiple devices and switching between them is good. The box is half English, half Chinese, but the instructions are completely in Chinese with no English version included. Not tailored for the US market. Knocked off a star for that, but the product itself does what it's supposed to do.

I somehow misplaced the USB dongle for my Logitech K350 keyboard. Funny because I put a note on the original box which aparently reminds me of where the original actually is, but I can't read my own writing! This replacement worked fine and it will also accept certain models of their wireless mice. Carrying the Unifying certification, I would think it would work with all their USB input products, as well as those of other manufacturer's. It's not mentioned in the instructions but I would be interested in knowing. BTW a warning. Windows 10 update has affected some systems; the keyboards have slow response. You litterally have to hold a key down for some 3-5 seconds before you get a response. I spent time researching this and apparently the most likely cause has to do with the EASE OF ACCESS section of your Control Panel. If you don't use the fully itemized version of Control Panel, select Control Panel and then from the old, normal control panel screen, go up to the file name and click the right arrow or down arrow that follows "Control Panel." If there is no arrow next to the name, just click on the name Control Panel at top and one will appear. Then select All Control Panel Items. You will now see a list of some 25 individual items rather than the old screen which has about six main categories. Now select Ease of Access, then "Make Keyboard Easier to Use." You will find a category regarding Filter Keys. It will read Turn On Filter Keys. If it is checked as being ON, uncheck the box. You don't want the filter keys on because that is the usual problem of having the slow response from the keyboard. Oh, one warning. Hit Apply. I forgot to and wasted another half hour trying to find a solution in the Registry which didn't work. I went back to Ease of Access and found the filters still being checked as ON. After trying three wired keyboards and one wireless without success, this was quite a good feeling!! If this isn't your problem, and you've already replugged in your USB cable, you are probably going to end up in the registry which is a place of last resort. I have no idea how the filter key got turned on but there is a suggestion that it may have to do with a Windows update. This seems to go back to Windows 7, but I have had Windows 10 for more than a year.

Worked perfectly when I downloaded the Logitech unifying software.

Does not work AND when I processed a return, received a message the item is NOT eligible for return. That was not advertised on item. Does not connect universal Logitech keyboard to my laptop---and directions are not in English. Complete waste of $15.