Rack Server Case for Framework Laptop 12 Mainboard
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Turn a spare Framework Laptop 12 mainboard into a 1U homelab server for 10" mini racks. 6 support-free parts.
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Updated at source:
Model information
- Source
- Printables
- Category
- Computers
- License
- Creative Commons — Attribution — Noncommercial
Your old Framework Laptop 12 mainboard, reborn as a 1U homelab server.
When you upgrade a Framework laptop, the old mainboard is left over. RACK12-1U gives it a second life as an always-on server in a 10" mini rack, next to your switch and NAS. It is a real x86 PC with DDR5 and an M.2 SSD, so it runs Home Assistant, Jellyfin/Plex, Pi-hole, WireGuard/Tailscale, Docker or Proxmox.
Highlights
Standard 10" rack, 1U (254 × 43.66 mm panel, 236.5 mm hole spacing)
Mounts on the board's own 5 captive screws – no modification to the mainboard
All 4 USB-C ports usable – 2 at the front, 2 at the rear (power + network)
Front power button – a hinged rocker presses the on-board switch, with an adjusting screw and a travel stop that protects the switch
Ducted airflow – front intake, internal baffle, fan exhaust straight out of the rear grille
6 support-free parts, the largest is 200 × 227 mm (fits Prusa MK4 / CORE One)
Checked against Framework's official CAD: no interference with any of the 168 board bodies, verified in Autodesk Fusion
Parts
Cover
(your mainboard)
Chassis
Rack ear, left
Rack ear, right
Button rocker
Button frame
Hardware
5 × M2 heat-set inserts (Ø3.2 hole) – board bosses
10 × M3 heat-set inserts (Ø4.0 hole) – cover pillars + ear pads
6 × M3×6 countersunk screws – cover
4 × M3×6 button-head screws – rack ears
2 × M2×4 countersunk screws – button frame
1 × M2×5 screw – button adjuster
10 mm of 1.75 mm filament – hinge pin
4 × M6 cage nuts + screws – rack
Print settings
Part | Orientation | Layer | Perimeters | Infill |
|---|---|---|---|---|
Chassis | floor on bed | 0.20 | 3 | 15 % gyroid |
Cover | top face on bed | 0.20 | 3 | 15 % gyroid |
Rack ears | standing, L flat | 0.20 | 4 | 40 %, 5 mm brim |
Button frame | front face on bed | 0.12 | 3 | 100 % |
Button rocker | front face on bed | 0.12 | 3 | 100 % |
PETG recommended (the exhaust chamber runs warm). No supports needed – the 3MF files are already oriented.
Assembly
Heat-set inserts (M2 flush with the boss tops).
Lower the mainboard onto the 5 bosses, tighten its captive screws gently.
Pin the rocker into the frame with 1.75 mm filament, slide the module into the front panel, fix with 2 × M2.
Adjust the M2×5 screw until the paddle is flush with the bezel.
Screw the ears and the cover.
Rack: 4 cage nuts, slide in, 4 × M6.
Before you power on
Without the laptop battery, BIOS settings survive only with a rechargeable ML1220 RTC cell (never CR2032)
Enable the standalone / power-on-with-AC option in the BIOS.
Rack depth needed: 227 mm + ~30 mm for cables.