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请问是第一次使用该板子吗？是否有尝试过更换电脑或者usb线测试排查？
第一次使用，都换过，还是没有反应
参考以下帖子看一下是否有帮助：
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/975633/iwr6843-dca1000evm-devpack-com-ports-for-dca1000-board-could-not-recognized-on-pc
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/946426/dca1000evm-the-computer-can-t-recongnize-the-usb-port
如果还是无法解决问题，建议您联系CSC。
