
Update - I'm ashamed I didn't check YouTube first before writing the review below. I just checked YouTube to see if anyone else has solved this issue and of course you will need to use Logitech Unifying software to pair devices with this receiver. Now I'm back in business! For those having the same problem as me, go to the Logitech website and type in "Unifying Software". Then everything is clear! ======================= Not working. I bought a pair of Costco wireless mouse and keyboard (model Logitech K520) and lost the receiver. After research I bought this item. It doesn't work at all.

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