Single thin cables were lost at room distance. Per rack and switch the cables now run as one bus up the back of the rack, thicker the more cables it carries, with a short stub from each port into it and a comb under the switch with a tail into each switch port; a bus to a switch in another rack crosses over the tops as a tray, to one in another room it rises to the ceiling. Each switch's bus has its own lane behind the rack. Everything is drawn as a few instanced meshes, picking resolves the instance (a bus names its cable count, a stub its port). Switches now show in the side panel's rack elevation at their unit (the 3D room's placement, estimates marked), their body runs deeper into the rack, and on the selected rack they carry a short name. The panel is drawn again once the switches are placed, also with a rack selected. A switch placed by hand mid-rack (place…) gets its bus there. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>