D) Power the gateway up. Booting log will be showed in the PuTTY terminal, in the end it will prompt you to input your log in name. Please note it takes 1 or 2 minutes to get the prompt information

Products & Technology LoRa
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What USB/serial adapter do you use ? most of them (all the more if it’s a cheap one) don’t support such high speed :wink:
You can also try to reverse TX/RX on the serial adapter ? marking is always ambigous for RS-232 !