LPMS uses silabs CP210x ic as the usb interface chip.
The CP210x can be configured into two interface modes:
Virtual COM Port (VCP)
USBXpress mode
USBXpress driver is required to interface with the sensor under USBXpress mode. The driver can be found in Silabs' developer website:
https://www.silabs.com/developers/direct-access-drivers
The direct download link for USBXpress SDKv.6.7.4 can be access from the link below:
https://www.silabs.com/documents/public/software/install_USBXpress_SDK.exe
After installation, the driver for the USBXpress can be found under the following folder:
<SDK FOLDER>/MCU/USBXpress_SDK/Driver