Logitech - USB Unifying Receiver - Black

You can look at the bottom of the mouse to see if the unifying symbol is there. Or remove the battery cover and it should say unifying. This is not you mouse but it does give you an idea of what to look for.

As it is not unifying you can run into a big problem if you lose the USB receiver (dongle). It happened to me and it took months until I was able to find a solution, neither the logitech page or blogs supported me, I found the solution in the comments of a youtube video. The solution was to buy a cheaper M185 mouse that uses the same USB receiver that we need. Once we have the dongle we use the Logitech Options or Connect Utility app of the brand, to synchronize it you have to remove a battery from the keyboard and turn off the mouse first. When it asks us to turn on the devices, we turn on the mouse and put the battery simultaneously. If we use Logitech Options, only the keyboard is added first and we give the option to add devices and add the mouse.

Hello Beth, the unifying receiver will not work with this combo. Here is the replacement dongle for that combo: https://support.logi.com/hc/en-us/articles/360025412093--Spare-Parts-Wireless-Combo-MK270. -Danielle from Logitech

If the bottom of your mouse and keyboard have the orange unifying insignia like is shown in the picture of this unifying receiver then it should work. Logitech has easy to use software available on their site that will allow you to pair your current mouse/keyboard with this receiver

Hello, the Unifying Receiver will not work with the H800 headset. Have you tried to connect to your computer via Bluetooth with the H800?