Booting Raspberry Pi400 without keyboard and with newly implanted RTC
Before closing the keyboard again after implanting DS3231 RTC module into left free space of Pi400, and soldering the needed cables to GPIO pins from Pi400 inside, I wanted to test whether RTC works. So I booted Pi400 without keyboard attached, and it worked. At the end correct time was displayed on Dektop top right corner when there was not network connection:
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