Option #1
In Object Mode, I add a Path Curve
In Edit Mode, I scale and move the Curve into my final shape
Under the Object Data Properties tab, under the Geometry panel, I increase the Bevel Depth
I also lower the Resolution Preview
In Object Mode, I right-click and convert the Curve to a Mesh
I then right-click and Shade Smooth
Option #2
In Object Mode, I duplicate the first cable
In Edit Mode, I select the horizontal Edge Loops and duplicate them
I then separate them from the original cable
In Object Mode, I select the new Edge Loops
I right-click and convert the Mesh to a Curve
Under the Object Data Properties tab, under the Geometry panel, I increase the Bevel Depth
I also lower the Resolution Preview
I right-click and convert the Curve to a Mesh
I then right-click and Shade Smooth
Option #3
In the Preferences window, I make sure I have the Extra Curve Objects add-on activated
I duplicate the default Cube
I select both Cubes
I use SHIFT + A to go to Curves > Knots > Caternary
Under the Object Data Properties tab, under the Geometry panel, I increase the Bevel Depth
I also lower the Resolution Preview
I right-click and convert the Curve to a Mesh
I then right-click and Shade Smooth