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MacPro 3.1, 4.1-5.1 ATX Bracket

Screenshot-2026-01-29-103129.png MacPro 3.1, 4.1-5.1 ATX Bracket
Screenshot-2026-01-29-103254.png MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_3999.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_4016.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_4002.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
MacPro 4.1-5.1 uATX Mounting Bracket.stl MacPro 3.1, 4.1-5.1 ATX Bracket
Updated ATX Bracket.stl MacPro 3.1, 4.1-5.1 ATX Bracket
Updated Bottom ATX Mount.stl MacPro 3.1, 4.1-5.1 ATX Bracket
Screenshot-2026-01-29-103129.png MacPro 3.1, 4.1-5.1 ATX Bracket
Screenshot-2026-01-29-103254.png MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_3999.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_4016.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
IMG_4002.jpeg MacPro 3.1, 4.1-5.1 ATX Bracket
MacPro 4.1-5.1 uATX Mounting Bracket.stl MacPro 3.1, 4.1-5.1 ATX Bracket
Updated ATX Bracket.stl MacPro 3.1, 4.1-5.1 ATX Bracket
Updated Bottom ATX Mount.stl MacPro 3.1, 4.1-5.1 ATX Bracket
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6 files (3MF, STEP, and STL) Close
  • MacPro 4.1-5.1 uATX Mounting Bracket.step
  • MacPro 4.1-5.1 uATX Mounting Bracket.stl 14.637905000000003 × 9.5 × 46.0 mm
  • Updated ATX Bracket.3mf 237.00001500000002 × 15.0 × 286.15114900000003 mm
  • Updated ATX Bracket.stl 237.00001500000002 × 15.0 × 286.15114900000003 mm
  • Updated Bottom ATX Bracket Mount.3mf 237.00001500000002 × 12.5 × 34.500001000000005 mm
  • Updated Bottom ATX Mount.stl 237.00001500000002 × 12.5 × 34.500001000000005 mm

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Publication date
Design number 3883908
Design author PracticalPrototyping
PracticalPrototyping

PracticalPrototyping

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3D printer file info

3D model description

MacPro 3.1, 4.1-5.1 ATX Bracket (possibly will work on 1.1-2.1 needs confirmation), designed to work with ATX, uATX and ITX motherboards. Has a standard height of 15mm, the same as the original MacPro motherboard. You will need to modify your case, as it will need to be fully cleaned from original brackets and boards. Check other parts in my profile for a complete ATX conversion. You will need a "MAX" 3d printer since these models require up to 300x300mm build plate. Mounting holes are meant for M3 brass inserts that are commonly found on Amazon or Aliexpress. The ATX bracket is mounted to the chassis by using M3x6mm Socket Head Screws, and additionally, it can use some glue, but optional, depends on how heavy your board is.

https://www.youtube.com/watch?v=60bBMA3KMJ0&t=147s

3D printing settings

PETG recommended 3-4 perimeter walls and 25-50% Gyroid infill.
The model consists of 3 parts. The uATX mounting requires printing a small bridge attachment and using an additional 10mm M3 stand-off (male-female). The main plate is split into two parts and fastened together with M3x6 Socket Head Screws and optionally glued together.

Categories

All categories › Various › Prototyping / Education / Recycling & Upcycling

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