Because the S1 pro has the led bar above, having the chain run along the axis could end up with the chain hitting the led bar above if you print really tall models.
This is a simple cut and merge i did in the slicer.
TechRex made the chain and Wojciech Kawa made the connector, all credits are theirs.
Link to chain https://www.printables.com/model/310284-ender-3-s1-cable-chain
Link to connector https://www.printables.com/model/281061-ender-3-s1-cable-holder
Link to the rear link Clip that clips into the stock cable holder
https://www.printables.com/model/382986-ender-3-s1-pro-chain-link-clip-techrex-chain
You have to use support under the main model, this only adds 18m of print time and total print time is 2h if you are printing at 30-60mm/s. I printed it with 5 walls and 20% adaptive cubic infill and it seems very solid.
I will try to remix one of the available s1 clips model to adapt it to this chain system to make the whole system complete.
The author remixed this model.