I buy the ASRock H270M-ITX / AC and the rj45 "Intel® I219V" is compatible by the 2nd rj45 "Intel® I211V" on mine do not yet.
On the second is a "Realtek RTL8111H" On the compatibility list we find the RTL8111, B, C, CP, D (L), F, G.
I do not these if the 2nd rj45 will be compatible.
The rest like wifi and bluetooth is of course not compatible for Xpenology.