Have you had any chance to do more testing yet? Are thermals under control?I've received Q20321G9-S10 system (w/C3558R) and it's pretty much as described.
Did not test it much yet, but both SFP+ interfaces are functional at 10G; the other two (1G SFP+?) are reported by FreeBSD 12.x as 1000BASE-KX ;-)