Manual - M3 Flatpack Kit

What's in the box

M3_WhatsInBox_Grater_Silver_Mesh
M3_WhatsInBox_Grater_Silver_Mesh-Glass
M3 Grater Flatpack Kits
M3_WhatsInBox_Round_Black_Mesh
M3_WhatsInBox_Round_Black_Mesh-Glass
M3 Round Flatpack Kits

Included in the kits:

  1. Front Panel
  2. Rear Panel
  3. Top Panel
  4. Bottom Panel
  5. Side Panels:
    Either Mesh Side Panel x2
    OR
    Mesh Side Panel x1 & Window Side Panel x1
  6. Motherboard Tray
  7. Fan + Radiator Bracket
  8. Power Supply Bracket - SFX
  9. Power Supply Inlet Cable (Right Angle)
  10. Screw Bag

NOT included in the kits:

  1. Power Supply Bracket - ATX
  2. High Flow Dual 140 Fan Bracket
  3. Round 15mm Tall Feet
  4. MB & GPU Rear IO Cover
  5. Front IO Cover - Round
  6. Grater Side USB IO Kit
  7. VGPU Kit (PCIe Cable included)

Screws for assembly

M3_Screws

Do NOT Overtighten The Screws! — Stop turning once resistance is felt; do not exceed one-quarter turn.

🧭 Tip: Fasteners differ in length and head shape. Lining them up side by side can help with identification.


Use the Mat

Use The Mat

Build on the included mat to protect panels from scratches!


Optimize Airflow

M3_Mini-ITX Airflow 1
M3_Mini-ITX Airflow 2
For Mini-ITX Motherboard ONLY

M3_Use the correct MB Plate side

For Mini-ITX and Micro-ATX Motherboards

For less dust, set intake airflow through the Side Panels with dust-filtering holes, and exhaust through the Top & Bottom Panels.

🧭 Tip: Top/Bottom Panel Intake Setups Are Supported.

Dust filters are available as an accessory for this type of airflow setup.


Install PSU Bracket

M3_Choose Power Supply Bracket

Choose either the SFX Bracket or ATX Bracket for installation.

M3_Power Supply Bracket Screws

Use your power supply screws to secure the bracket — use 3 screws ONLY to avoid interference.


Secure PSU to MB Plate

M3_Use the correct MB Plate side

Check orientation — the MB Plate's flat side should face the PSU.

M3_PSU to MB Plate Mini-ITX 1
M3_PSU to MB Plate Mini-ITX 2
For Mini-ITX Motherboard ONLY
M3_PSU to MB Plate Mini-ITX and Micro-ATX 1
M3_PSU to MB Plate Mini-ITX and Micro-ATX Grater
For Mini-ITX and Micro-ATX Motherboards

Install Motherboard

Install Mini-ITX Motherboard 1
Install Mini-ITX Motherboard 2
Mini-ITX Motherboard
Install Micro-ATX Motherboard 2
Install Micro-ATX Motherboard 2
Micro-ATX Motherboard

Install CPU Cooler

M3 CPU Cooler Noctua NH-D15 G2


Install GPU

Install Graphics Card

🧭 Tip: Plug in the PSU cables to the Motherboard, GPU, and other components before the next step. This will save a lot of hassle later.


Install Rear Panel

Rear Panel

The GPU IO Bracket Tabs must be fully inserted into the Rear Panel slot.

Rear Panel

Top Screw Alignment

Do NOT remove the GPU Lock Bar, removal makes installation harder.

Caution Screw

Check the GPU is seated properly before tightening the screws.


Install PSU Inlet Cable

PSU Inlet Cable

Pass the PSU inlet cable C13 male head through the Rear Panel.


Install the Front Panel

Front Panel

Top Screw Alignment

Make sure this screw is aligned with the hole on the ATX/SFX PSU Brackets.

Caution Screw

Using a longer screw at this location will damage your power supply!

Front Panel PSU Airflow Round

🧭 Tip: Orient PSU fan away from the solid Front Panel for better airflow.

Front Panel PSU Airflow Grater

🧭 Tip: Orient PSU fan toward the vented Front Panel for better airflow.


Install Bottom Panel

Bottom Panel


Install Fan Bracket

Fan Bracket Side Install

Side Fan Bracket Mount — Remove the Front & Rear Panel Foams.

Fan Bracket Side Install gif

Side Fan Bracket Mount — Adjust up & down for the best fit.

Fan Bracket Top Install

Top Fan Bracket Mount — Keep the Front & Rear Panel Foams in place.

Fan Bracket Top Install gif

Top Fan Bracket Mount — Adjust left & right for the best fit.

🧭 Tip: Don’t tighten the screws yet!

Install the Fan Bracket with screws loosely in place.
Install the Top Panel and make sure it opens/closes smoothly.
After checking the Top Panel fit, fully tighten the bracket screws.



Adjust Fan Bracket to fit Top Panel


Install Side Panels

Side Panels

Insert the bottom edge of the Side Panel into the Bottom Panel slot. If not fully seated, the top panel will not close properly.

Panel Alignment


Final Step: Install Top panel

Top Panel

Insert the Top Panel’s front edge (tongue) into the Front Panel recess.

🧭 Tip: Make sure both side panels are fully seated first. If misaligned, the top panel won't close properly.



Secure Top Panel

Secure the top panel by inserting the included Thumbscrews into the Rear Panel holes and tightening by hand.

🧭 Tip: These screws prevent accidental sliding or lifting of the top panel during use or transport.


Accessory — High Flow Dual 140 Fan Bracket

M2 & M3 High Flow Dual 140 Fan Bracket


Accessory — 15mm Tall Feet

More Details Coming Soon


Accessory — MB & GPU Rear IO Cover

This two-piece MB & GPU IO cover works with M2 and M3. The open-source file is on our 3D Files page.


Accessory — Front IO Cover

M3 Front I/O Cover - Round


Accessory — Grater USB IO Kit

More Details Coming Soon

M2 M3 Grater Side USB IO Kit


Accessory — VGPU Kit

More Details Coming Soon