Gebäudeverkabelung
There are 12 permanently installed Ethernet links going from various wall sockets in the room to the rack, ending up on the black 24-port patch panel at the very top. Different quality of cable was use (some CAT6, some shielded CAT5, some CAT5 UTP), so your high-frequency (i.e. Gigabit) mileage may vary.
The wall sockets are all labeled, the labels corresponding the the number on the patch panel:
Socket number 10 is located in the middle of the room near the ceiling on the cable rails. This port carries the VLANs to the access point:
The ports on the patch panel are then patched into the first core switch flz-sw-01.mgmt.fablab.local, again with the port numbers corresponding to the numbers on the wall sockets. Assignments of ports to specific VLANs happen inside the switch, see Internal Network