boot also SPI without SDcard armbian buster default, two tested with official u-boot
Gigabyte Model:GP-GSM2NE8128GNTD
Kingston A2000 M.2 2280 PCIe NVMe
AGAMMIXS5-512GT-c …unstable and heats up strongly
Samung 970EVO PLUS also heats up strongly
maybe some problem with PCIe power management