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You can't pair a non-unifying device to the unifying receiver. If you lost the original dongle you're screwed.
Sorry, there was a problem. Please try again later.Yes
Sorry, there was a problem. Please try again later.You will need to download the Logitech Unifying Software to have your receiver detect the existing keyboard. https://support.logi.com/hc/en-us/articles/360025297913
Sorry, there was a problem. Please try again later.Hello PnikX, Yes, the MK710 mouse and keyboard combo also uses the Logitech Unifying USB receiver. Up to 6 devices can be connected to one Unifying receiver. Please visit the Logitech support website to download the “Unifying” software, and I also recommend downloading the “Firmware Update Tool” to ensure your receiver has the latest updates. I have attached a link to the “Getting Started” page for the M325. These downloads are available in the “downloads” tab. Please feel welcome to visit the Logitech support website if you need further assistance with your Logitech products. Best regards, John at Logitech https://support.logi.com/hc/en-us/articles/360024704274--Downloads-Wireless-Mouse-M325
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