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USB dongle. Unifying.
Sorry, there was a problem. Please try again later.Hello, the K270 uses a USB receiver, or dongle, plugged into a USB port which transmits a signal to the keyboard in order to connect. Here's a link to the Getting Started guide which further explains this: https://www.logitech.com/assets/45924/wireless-combo-mk270-quick-start-guide.pdf. Have a great day! - Richard from Logitech
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