Meshroom S V2 — ITX Motherboard with ATX PSU Layout Guide

Two Layout Options with ITX MB + ATX PSU

Layout 1: PSU in Front of the Motherboard (Recommended)

• Motherboard Tray Position: Must use the 3-slot position to make room for PSU in the front.

• GPU Compatibility:

  • Supports up to 3-slot GPUs（63mm）.

  • 4-slot GPUs are not compatible in this layout.

  • Rear position GPU:

    • Max length: 332 mm

    • Up to 352 mm with aluminum standing feet

  • Front position GPU:

    • Max length: 332 mm with standing feet

• Cooling Support:

  • Up to 280mm AIO in the front.

  • CPU cooler height <74 mm.

• PSU Length Limitation:

  • Supports ATX PSUs up to 170mm in length.

  • ⚠️ Important Fitment Notes:

    • 170 mm PSU → front-mounted AIO is blocked; supports only fan installation (no radiator).

    • 160 mm PSU → supports AIO with upward tubing, max thickness 55 mm.

    • 150 mm PSU → supports AIO with downward tubing, max thickness 55 mm; rotate the radiator to face outward.

  • Best overall flexibility: use a 150 mm ATX PSU.

Layout 2: PSU Behind Motherboard

• Motherboard Tray Position: Must use the 4-slot position to allow PSU placement behind the tray.

• GPU Support:

  • Must use a Small Form Factor (SFF) GPU mounted in the rear position

• CPU Cooler Support:

  • Max height: 54 mm (limited by tray offset)

• Cooling: Limited to compact air cooling solutions only

• Storage Advantage:

  • Frees up more space in the front for hard drives or airflow optimization

 Summary Comparison Table