A remix of two different models combined to make a lower Z ribbon cable guide for your S1/S1 PRO. I wanted something where I didn't have to use any screws/nuts to attach to keep the lower Z ribbon cable in place. I found two models that fit what I wanted and edited them in Tinkercad into one model.

Printed at 0.2 layer height on matte black PLA. I ran multiple tests raising and lowering my printer to the full Z height of 270 and it never moved.

To attach place the cable into the guide first then take the small lip and go into the Z extrusion and wrap around. Should slide right on and sit at the bottom. Be careful not to hit the hotbed knob in the back left corner as you place it.