Replaced my Pi4 with an ODroid C4 thanks to continuously fighting with power issues. It's a little cleaner now using emmc instead of booting from SSD on the Pi4. : r/homelab
ODROID-XU4 USER MANUAL
How-To: Fix OS Partition with Zero Bytes Free on SBCs Running Linux Fr — ameriDroid
Recalbox 6.1 image won't boot from EMMC on Odroid XU4 | Recalbox Forum