How to connect KODI over network

Hi guys,

and sorry for the lame question.
Have troubles locating my pc drive over the network. The design is as follows:

SWITCH —> Router —> PC
^
KODI

As the Kodi is connected to the SWITCH and is located outside of the Router’s network how shall I do the connection? have tried SBM, but
without any success. As the cabling is complicated I can’t switch the Kodi directly to the Router. The kodi
connects over Wi-Fi and locates the drive/folders, but want to use the LAN because of the speeds.
Searched for a thread in the forum, but couldn’t find anything of use.

Hope to get some support!
Thank you in advance and sorry once again!