@igorp,
I have searched and I cannot find any reference to this board NOT having a SPI chip.
If it does have the SPI chip, is booting from eMMC possible? Better yet, from USB?
From the WIKI…
" What’s the difference between Model A and Model B and Model C?
The model B has PoE header, 802.11ac wifi, bt 5.0 while the model A doesn’t have. The form factor is compatible. The Model C has the same features as model B except one additional Mini DP port for dual display and the HDMI port connector is changed to Micro HDMI (D type)."
Regards,
-Ron