Hi @Mangesh Purandare ,
Welcome to Microsoft Q&A!
This release for the Raspberry Pi 3B+ is an unsupported technical preview. Limited validation and enablement have been completed. For a better evaluation experience and for any commercial products, please use the Raspberry Pi 3B or other devices with supported Intel, Qualcomm, or NXP SoCs.
Some USB keyboards and mice may not work on IoT Core. Use a different keyboard or mouse. A list of validated peripheral devices can be found in the documentation here: Hardware compatibility list
For more information, please refer to this document: Release Notes for Raspberry Pi 3B+
Best regards,
Seeya
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