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Only one blue tooth dongle required for both my mouse and keyboard. So yes, you only need to use one USB port.
Sorry, there was a problem. Please try again later.Hello MrsA. The K750 uses the Unifying Receiver, so any mouse that also uses a Unifying Receiver will be able to be paired together with this keyboard. You will only need 1 USB for up to 6 Unifying devices. You can tell if a mouse is unifying if there is an orange/yellow star logo on the USB receiver and often on the bottom of the mouse itself.
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