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Continue to ChatUSB with the TWR-KL25Z48M Board: Check Jumper J18! https://mcuoneclipse.com/2014/08/03/usb-with-the-twr-kl25z48m-board-check-jumper-j18/
USB with the TWR-KL25Z48M Board: Check Jumper J18! https://mcuoneclipse.com/2014/08/03/usb-with-the-twr-kl25z48m-board-check-jumper-j18/