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Inland wireless keyboard and mouse combo from micro center. My model is JW9851 and mouse is YES. Can’t find a place to get a new dongle, any ideas?

They are nothing special. It is just a Bluetooth dongle. Bluetooth® technology uses the 2.4 GHz ISM spectrum band (2400 to 2483.5 MHz), which enables a good balance between range and throughput. Any computer shop will have USB port Bluetooth® dongles. Take your pick. Specs for yours: Wireless keyboard Item No. JW9851 Carrier frequency: 2405MHZ—2472MHz https://fccid.io/YHA-JW9851/User-Manual/