nRF52840 with external flash memory as USB flash drive?

[samsam]

Is there a way nRF52840 with external flash memory to work as standard USB flash drive (standard I mean discoverable from most common operating systems) as a known type flash drive without need of any custom driver installation?

Thanks

[Kenneth]

You can find USB examples in the nRF5 SDK, including one for mass storage class:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/examples_usb.html

The throughput speed is not very high, so mainly aimed for DFU and transfer of small files.

Kenneth

[samsam]

Is there a way to reserve some partition from the external flash to be accessible only from nRF and the rest from both (nRF and external USB connection) or have to use two separate flash chips?

Thanks