ch340g没有ACT#管脚,如何让下位机判断是否接入usb口,难道只能用ch341或ch340t吗?
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USB3.0 HUB控制器:CH634
ch340g没有ACT#管脚,如何让下位机判断是否接入usb口,难道只能用ch341或ch340t吗?