These are to aid when replacing a failed rackmount Ethernet switch, or upgrading to a newer model. getting each cable back into the exact spot it was on the old switch has always been quite the chore So, I needed something to keep those cables organized while they were hanging around. I found ruarri's "Ethernet Cable Manager" and customized that (quite heavily) in TinkerCAD.

I added an arrow-like detail to each end so you can be sure the cables go back in the right direction.

The 4x2 version holds 1/3 of the cables on a 24-port switch, and the 8x2 holds 1/3 of the cables on a 48-port switch..

The spacing of the cables in these is based on enterprise switches from HPE, but the spacing should be very close to any other brand as well.