QUECTEL EC25EUXGA-128-SGNS Hardware Design

Hi, we connect USB_VBUS to 3.8V, but it does not recognize USB.

In data sheet it says, USB_VBUS Norm=5V min 3V, why it does not recognize thanks…

Dear Sir
The USB_VBUS voltage detection range is 3.0~5.25V, please check whether the driver installation is successful and whether the module is turned on normally.