SMI300XS Exam Dumps : Supermicro MI300X GPU Service Specialist (SMI300XS) Exam

TheAOM (Add-On Module) cardis a crucial expansion module used inSupermicro MI300X GPU systemsfor enhanced connectivity (e.g., RAID controllers, additional network interfaces, or IPMI management).

What happens if AOM cables are misplaced?

The AOM card may not function

The system depends onspecific cabling configurationsto communicate with the AOM module.

Incorrect connections can causehardware failures, incorrect detection, or data transmission errors.

PCIe lane allocation may be disrupted

Many AOM cards usePCIe lanesfor data transmission.Misplacing cables can disable or limit their bandwidth, leading to performance degradation.

BIOS may not detect the AOM card

Some AOM cards requirefirmware initialization, which only happens if the correct ports are used.

Incorrect Answers Explained:

A (System will self-destruct)→ The systemwill not explode, butit may fail to boot properly.

B (Customer will be happy)→ Misconfigured AOM cards typically lead tosystem errors and dissatisfied customers.

D (System will function normally)→ If cables are misplaced,the system will not function properly.

Official Documentation Reference:

Supermicro MI300X GPU System Hardware Guidestates thatAOM cables must be reconnected in their proper ports for the system to function correctly.

Understanding the Midplane in Supermicro MI300X Systems

Themidplane in the Supermicro MI300X GPU systemacts as acentral connection hubthat links various system components, such as:

NVMe storage backplanes

PCIe interconnects

Power distribution pathways

Motherboard to GPU communication lanes

Because of itsdelicate nature and multiple connectors,it must be removed carefullyto avoiddamaging fragile electrical contacts.

Correct Midplane Removal Process

Tosafely remove the midplane, follow theseSupermicro-recommendedsteps:

Ensure all power is fully disconnected

Shut down the systemproperly.

Remove all power cablesanddisconnect all PSUs.

Ground yourself using an anti-static wrist strapto preventelectrostatic discharge (ESD)damage to sensitive components.

Detach all necessary trays and cables

Disengage the PCIe tray, motherboard tray, and GPU trayto ensure clear access.

Disconnect all MCIO cables, power cables, and ribbon cablesto prevent accidental pulling or tearing.

Use both hands for removal

Place both hands firmly on the midplane bracket.

Lift the midplane bracket straight upto ensure a smooth removal process.

Avoid angling or twisting the midplaneas this candamage its connector pins.

Ensure no resistance is felt

If the midplanedoes not lift easily,double-check for any remaining screws or connected cablesbefore applying force.

Why Using Both Hands is Crucial?

Prevents bending or flexing

The midplane is alarge PCB with multiple connection points.Using both hands ensures even lifting pressure, preventing PCB bending.

Avoids strain on connectors

If removed at an angle, it canstress delicate connectors, leading to permanent damage.

Ensures a firm grip

Some components inside the systemcan be heavy. Using both handsensures stability and reduces risk of dropping.

Why Other Answers Are Incorrect?

If False were correct, it would suggest improper handling techniques that can damage the system.

Supermicro documentation clearly states that the midplane must be removed using both hands and in an upright motion.

Official Documentation Reference:

Supermicro AS-8125GS-TNMR2 Disassembly Guideinstructs technicians to useboth hands and lift straight upto prevent damage.

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.