Jonsbo N5 PSU Spacer

The Jonsbo N5 only gives you all 12 drive bays with a PSU 170mm long or shorter. Many good ATX units are longer (mine is an ASRock PG-1600G at 180mm), and the extra length blocks the fourth drive cage.

This frame fits between the case and the stock PSU mounting plate and moves the plate (and the PSU) 12mm out the back, which is enough for the 4th cage to clear. Stacked metal motherboard standoffs carry the screw load. The printed frame locates them, stops them spinning, and closes the gap.

Tested and fitted in my own N5.

WHAT YOU NEED

- 8x 6-32 male-female motherboard standoffs, 6mm body, 5mm (3/16") hex (two per screw hole)

- The stock N5 PSU plate and its stock screws

- This printed frame

PRINT SETTINGS

- PETG preferred, PLA works (the frame carries no screw load)

- Print case side down (the raised lip faces up). Minor supports required.

- 3+ walls, 20%+ infill

- Print the small test coupon first: a standoff should slide into the hex pocket without force and not spin. Stack two standoffs next to it; the coupon should be about 0.3mm taller.

ASSEMBLY

1. Remove the PSU plate from the case.

2. Screw two standoffs, stacked, into each of the four case holes that held the plate.

3. Drop the frame over the standoffs (hex pockets).

4. Bolt the PSU to the plate as normal.

5. Slide the PSU in and screw the plate onto the standoffs with the stock screws. The frame stands 0.3mm proud of the metal, so it gets clamped snug.

6. Check that the fourth drive cage clears the PSU and its cables.

PARAMETRIC SOURCE

The Fusion 360 file (.f3d) is included and fully parametric. Open Modify > Change Parameters:

- standoffs_per_stack: 1, 2, 3... (2 = 12mm offset)

- standoff_len: body length of your standoffs (default 6mm)

- frame_crush: how far the plastic sits above the metal stack (default 0.3mm)

- psu_clear: gap around the PSU body per side (default 0.5mm)

- hex_pocket_af: pocket size across flats (default 5.25mm, tune from the coupon)