Supermicro SMI300XS Exam With Confidence Using Practice Dumps

Understanding MCIO Cables in Supermicro MI300X Systems

MCIO (Multi-lane Cable I/O) connectorsare used forhigh-speed data transmission between the motherboard and NVMe SSDs or PCIe devices.

These connectorsmust be handled carefully, as improper removal cancause pin damageorpermanent failure of the interface.

How to Properly Unlock and Release MCIO Cables

Locate the release levers on the MCIO connectors

Each MCIO connector has asmall built-in release leverthat locks it in place.

Press down on the release levers

This disengages the locking mechanism andallows the cable to slide out easily.

Gently pull the MCIO cable straight out

Do not pull at an angleas it can damage thehigh-density connector pins.

Why Other Options Are Incorrect?

A (Pull really hard)→ Forcing the connector without releasing the latch canbreak the MCIO pins or damage the motherboard socket.

B (Remove screws)→ MCIO cablesdo not use screws; they have built-in locking mechanisms.

D (Loosen bolts)→ There areno boltssecuring MCIO cables; only therelease lever is needed for unlocking.

Official Documentation Reference:

Supermicro AS-8125GS-TNMR2 Motherboard Manualstates thatpressing down on the release levers is the correct method to unlock MCIO cables.

To remove theheatsink from the motherboard tray,a T30 Torx bit is required. This tool ensuresproper torque applicationandprevents damageto both the heatsink and the motherboard.

Why a T30 Torx bit is necessary?

Supermicro MI300X GPU systems use precision heatsink retention mechanisms.

Theheatsink screws are secured with factory torque settingsand require aT30 Torx bitfor safe removal.

Using an incorrect tool (Phillips screwdriver, T20, or T40) can strip the screw heads, making it difficult to remove the heatsink without causing damage.

Incorrect Answers Explained:

A (PH2 Phillips screwdriver)→ Not strong enough for heatsink screws, which requirehigh torquefor proper seating.

C (T20 Torx bit)→ Toosmall, risksstrippingthe screws.

D (T40 Torx bit)→ Toolarge, does not fit the heatsink screws.

Official Documentation Reference:

Supermicro MI300X Service Manualspecifies that aT30 Torx bitmust be used to remove the heatsinkwithout damaging the motherboard.

NVMe Backplane Connection Requirements in Supermicro MI300X Systems

Afterinstalling the NVMe backplane, the following cablesmust be reconnectedfor proper system functionality:

i2C Cable(Inter-Integrated Circuit Cable)

Responsible fordata communication, sensor monitoring, and system management functions.

Ensures thatstorage devices are properly detectedby the motherboard.

SAS Cable(Serial Attached SCSI)

Used forhigh-speed storage connectivityin hybrid NVMe/SAS systems.

Ensuresdata integrity and fast data transfers between SSDs and the system controller.

Power Cable

Supplies power to the NVMe backplaneandconnected drives.

Without this,NVMe drives will not receive power and will not be detected by the system.

Why Other Options Are Incorrect?

B (Only the SAS Cable)→ While the SAS cable is important,the power cable and i2C cable are also required.

C (Only the i2C Cable)→ The i2C cable isnot sufficient by itself; the NVMe backplaneneeds both power and data connections.

D (Only the Power Cable)→ Power is needed, butdata connectivity through SAS and i2C is essential for full functionality.

Official Documentation Reference:

Supermicro NVMe Storage System Guideconfirms thati2C, SAS, and power cables must all be reconnected after NVMe backplane installation.