Minimum connections needed to power R7415 motherboard?

Question

I have a R7415 motherboard with EPYC processor and a little RAM. I have a non-redundant power supply. I have an empty chassis. I have connect 3 power connectors from the power supply to the motherboard via
System power connector 1

System power connector 2

System power connector 3

I have also connected the right ear cable to the Right control panel connector on the motherboard.

I don't have a left ear to connect to the Left control panel connector.

Nothing happens when I press the power switch on the right ear. There are lights on the motherboard (some flashing).

Any ideas?

DELL-Young E · Answer

Hi, I would take the server to a minimum to POST configuration.
Minimum to POST for the R7515:

Minimum configuration to POST

The components mentioned below are the minimum configuration to POST:

· One processor (CPU) in socket CPU

· One memory module (DIMM) in socket A1

· One power supply unit

· Right control panel and cable (for power button functionality)

· System board

· PDB/PIB and cable

· One power supply unit

zedei · Answer

thanks. I don't have a Power Interposer because I'm using a non-hotswap power supply that has cables that plug directly into the motherboard. There are some green led's on the mother board that are flashing but I cannot find and docs as to their meaning.

DELL-Marco B · Answer

Hello,

if in a minimum to post configuration the server doesn't post, then the issue is probably motherboard or CPU.

Can you change the DIMM module in A1 with another one, just to exclude a DIMM problem?

Thanks

Marco

Power & Cooling

Minimum connections needed to power R7415 motherboard?

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