Why Must All Cables Be Moved Out of the Way?

Themidplane bracket in Supermicro MI300X GPU systemshousesmultiple power and data connections. If cables are not movedout of the way before lowering the bracket, the following issues can occur:

Cable Pinching or Crushing

If cables are trapped beneath the midplane,their insulation can get damaged, leading to potentialshort circuits or power failures.

Improper Connector Alignment

Misplaced cablesmay obstruct connector seating, preventingMCIO, PCIe, or NVMe connections from fully engaging.

Potential Performance Issues

If data cables are twisted or bent sharply,signal integrity issuesmay arise, causingintermittent connectivity failures.

Step-by-Step Safe Midplane Installation:

✅Step 1:Identify all power and data cables before lowering the midplane bracket.✅Step 2:Move all cables out of the way and neatly route them along their designated pathways.✅Step 3:Slowly lower the midplane bracket into position, ensuring cables remain free from obstruction.✅Step 4:Check that all connectors are accessible and that no cables are trapped under the bracket.

Why Other Options Are Incorrect?

A (Only move the ribbon cable)→ Other cables may still be in the way, risking damage.

B (Only move the power cable)→ Power cables are important, butdata cables must also be repositioned.

C (Only move the I2C cable)→ The I2C cable alone is not enough;all cables need clearance.

Official Documentation Reference:

Supermicro AS-8125GS-TNMR2 Service Manualspecifies thatall cables must be moved before lowering the midplane bracket to avoid obstruction and damage.