SMI300XS Exam Preparation Material | Supermicro MI300X GPU Service Specialist (SMI300XS) Exam

Prepare for the SMI300XS with reliable study materials, practice questions, and key exam insights.

Prepare for the SMI300XS Supermicro MI300X GPU Service Specialist (SMI300XS) exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

To remove the midplane, use both hands to lift the midplane bracket straight up and out of the chassis .
True or False?

A. True
B. False

Explanation:
Understanding the Midplane in Supermicro MI300X Systems
The midplane in the Supermicro MI300X GPU system acts as a central connection hub that links various system components, such as:
✑ NVMe storage backplanes
✑ PCIe interconnects
✑ Power distribution pathways
✑ Motherboard to GPU communication lanes
Because of its delicate nature and multiple connectors, it must be removed carefully to avoid damaging fragile electrical contacts.
Correct Midplane Removal Process
To safely remove the midplane, follow these Supermicro-recommended steps:
✑ Ensure all power is fully disconnected
✑ Detach all necessary trays and cables
✑ Use both hands for removal
✑ Ensure no resistance is felt
Why Using Both Hands is Crucial?
✑ Prevents bending or flexing
✑ Avoids strain on connectors
✑ Ensures a firm grip
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.

Question#2

Exhibit:



When installing the midplane bracket back into the chassis, what design feature in the chassis helps you properly align the midplane bracket?

A. Guide stickers in the chassis
B. Grooves in the chassis
C. Arrows in the chassis
D. Velcro in the chassis

Explanation:
Why Do Supermicro Systems Use Grooves for Alignment?
In Supermicro MI300X systems, the midplane bracket is aligned using built-in grooves in the chassis.
✑ Ensures Perfect Alignment
✑ Prevents Installation Errors
✑ Supports a Tool-Free Installation
Why Other Options Are Incorrect?
A (Guide stickers in the chassis) Stickers may be present for labeling but do not physically align the midplane.
C (Arrows in the chassis) Arrows are visual indicators only, not physical alignment tools.
D (Velcro in the chassis) Velcro is not used in midplane installation.
Official Documentation Reference:
✑ Supermicro AS-8125GS-TNMR2 Hardware Guide explicitly states that grooves in the chassis help with midplane bracket alignment.

Question#3

When reinstalling the motherboard tray, is it necessary to align it properly with the chassis grooves before securing it with screws? True or False?

A. True
B. False

Explanation:
Importance of Proper Alignment in Motherboard Tray Installation
The motherboard tray in Supermicro MI300X systems is precisely designed to fit into pre-existing grooves in the chassis.
✑ Ensures a Secure Fit
✑ Prevents Cable Routing Issues
✑ Guarantees Proper PCIe and Power Connections
Proper Installation Steps for the Motherboard Tray:
Step 1: Slide the motherboard tray into the chassis grooves for proper alignment .
Step 2: Ensure it is flush with the chassis before securing screws.
Step 3: Tighten screws evenly to prevent misalignment.
Why is False Incorrect?
✑ If False were correct, it would imply that the motherboard tray can be installed without aligning it properly, which is not possible in Supermicro MI300X systems.
✑ The system will not function properly if the motherboard tray is misaligned.
Official Documentation Reference:
✑ Supermicro AS-8125GS-TNMR2 Service Manual confirms that the motherboard tray must be aligned with the grooves before securing it with screws.

Question#4

In order to remove the midplane from the AS-8125GS-TNMR2 system, and after you remove all the PSUs, you will need to disengage 3 trays.
What is the correct order for disengagement?

A. Disengage the PCIe tray first, then the GPU tray, and the motherboard tray last.
B. Disengage the PCIe tray first, then the motherboard tray, and the GPU tray last.
C. Disengage the motherboard tray first, then the PCIe tray, and the GPU tray last.
D. Disengage the GPU tray first, then the motherboard tray, and the PCIe tray last.

Explanation:
The correct order for removing trays before midplane removal is:
✑ Disengage the PCIe tray first
✑ Remove the GPU tray
✑ Remove the motherboard tray last
Why other options are incorrect?
B (Motherboard before GPU tray) The motherboard tray must be removed last to avoid disconnecting system-critical connections too early.
C (Motherboard tray first) Removing the motherboard first risks damaging PCIe and GPU components.
D (GPU tray first) The GPU tray is dependent on the PCIe tray being removed first, making this order incorrect.
Official Documentation Reference:
✑ Supermicro AS-8125GS-TNMR2 System Removal Guide outlines the correct order for tray disengagement before midplane removal.

Question#5

Which cable connecting the AOM card to the motherboard is NOT a data cable?

A. Power cable
B. MCIO cables
C. JNCIS1
D. SAS cable

Explanation:
The power cable is the only cable that is not a data cable when connecting an AOM card to the motherboard.
Cable Functionality Breakdown:
A (Power Cable) NOT a data cable
B (MCIO Cables) Data cables
C (JNCIS1) Data cable
D (SAS Cable) Data cable
Official Documentation Reference:
✑ Supermicro AOM Expansion Module Guide states that the power cable is the only non-data cable in AOM installations

Exam Code: SMI300XS
Q & A: 42 Q&As         Updated:  Oct 17,2026

 

 Access Complete SMI300XS Preparation Material

What This SMI300XS Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current SMI300XS exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This SMI300XS Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the SMI300XS exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

Independent SMI300XS Preparation Resource

CertQueen independently develops its certification study materials for educational purposes. The practice questions are not copied from, recalled from, or presented as live or official exam questions.

CertQueen is not affiliated with, endorsed by, sponsored by, or authorized by any certification provider. Certification names, exam codes, product names, and related trademarks are the property of their respective owners and are referenced only for identification and educational purposes.

Exam Code: SMI300XS
Q & A: 42 Q&As
Updated:  Oct 17,2026

 

 Access Complete SMI300XS Preparation Material