. . 1 for external storage could maybe squeeze SD interface if its possible to reclaim GPIO23242529 dedicated to power sensingswitching and the led. . Edit config. . I used the steps below; you might want to try Raspberry Pi OS Imager. 99. . . . Connected to the USB port and it will appear as USB Mass Storage by default, no driver is needed Supports MicroPython, C and C Programming Language. 0 ports.