PatchBox sells kits of 24 cassettes that slot into a 1U module just under the patchboard, right where you would usually put your horizontal cable management system.

High-Density Cable Management Solutions Based on Patch Panel. Patch panel cable management is involved in many components: fiber optic enclosures (wall mount or rack mount enclosure), fiber optic ...

That convenience has a price — in this case, around €800 (US$889) for a rack of 24 Ethernet cassettes, or between €1000 and €1100 for the optical version, depending on cable type.