[ Internet ] { origin: PoE/VLAN Switch; offset: 0, -2 } -- [ PoE/VLAN Switch ]
[ Controller ] -- { end: west } [ PoE/VLAN Switch ]
[ Controller ] { flow: south } -- [ USB Hub ]
[ PoE Splitter ] { flow: north } -- [ PoE/VLAN Switch ]
[ Board ] -- { label: "Network" } [ PoE Splitter ]
[ Board ] -- { label: "Power" } [ PoE Splitter ]
[ USB Hub ] -- [ Serial adapter ]
[ USB Hub ] { flow: north } -- [ SDWire ] { origin: USB Hub; offset: 0, 2 }
[ SDWire ] -- [ Board ]
[ Serial adapter ] { flow: south; } -- [ Board ]