OK. I have installed ROCK on PC: Gigabyte GA-1037UN-EU with two ethernet ports and PCI ethernet card TP-Link TF3239DL, 4GB RAM, SSD 32GB for OS, two SSDs for libraries (2TB and 1TB). All successfully working if I connect patch cord from internet router to one ethernet port and patch cord from my music PC with RoonBridge to another ethernet port. 
(strange ip address 169.254.197.82 but working
)But there are no networked devices if I connect patch cord from my music PC to ethernet port of PCI ethernet card TP-Link
Does this mean that there are no drivers for this card in ROCK or something else?
And is it possible to support both SSDs for libraries (currently only one 2TB SSD is supported)?