Usb cable organizer.

Designed for the cables to hang downwards.  Can attach to an underside of a shelf with screws.

Printed in tpu. No supports. 20% infill.

To modify the step file, use solid edge community.  Open as an iso metric part.  

Use smart dimension. 

Click on the inside bottom of the part as per pic. 

Make sure the design intent is on. 

Click the middle arrow button for symmetrical movement.

Adjust size - type in the requested size - it will auto size to your input. All the holes will change to that dimension, so you only have to do it once.

Save as stl - when saving as stl you will see an options tab - you can change the options for a higher quality stl.