ATX power connector bracket (shown on MakerFarm Prusa i3)

thingiverse

On February 24th, 2014, an update was made to the original design of the ATX power plug bracket ("ATX power plug bracket.stl"). This revision featured slightly enlarged openings for easier connector installation without requiring any post-print cleanup. The primary motivation behind this upgrade was the inconvenience experienced during the fitting of connectors in the initial version, which necessitated considerable cleanup and scraping. The updated design also boasts a longer bracket, allowing for greater clearance around the mounting screws. This modification ensures unhindered access to the fasteners even with the printer-side connectors still in place. The mounting ears of the new version are thicker and stronger, while the printed screw holes have been expanded slightly to match most standard screw sizes, although minor drilling may still be necessary. The original file is retained for users who prefer a tighter tolerance. In lieu of trimming connectors on the power supply to attach them to the circuit board, it's recommended to purchase ATX extension cables from Amazon and cut those instead. Subsequently, print a bracket to securely mount these extensions to the printer for easy plugging and unplugging of the power supply. In addition to the printed screw hole dimensions, users should be aware that precise drilling may still be necessary due to tight tolerances on the holes. Furthermore, two dimples are included in the center of the mounting tabs to aid with drilling the required mounting screw holes. Despite these minor adjustments, some carving with a knife may still be needed for perfect connector fitting.