Question Intel Server MB S2600STB Processor Gold 5120 not recognized

Dec 7, 2018
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Hello,

I'm mounting a server with the following components:

2600STB MB,
2x LGA3647 BX806735120 5120 Processor,
2x BXSTS300C thermal solution ,
6x KSM24RD4/32HAI RAM
750W Corsair PSU

Every time I tried to turn on the server I get an 1-5-2-1 beep error, which referes to a problem with the processor: "CPU socket population error CPU1 socket is empty, or sockets are populated incorrectly. CPU1 must be populated before CPU2". I have tried switching the processors, using only CPU1 socket, and still nothing.

Any idea in how to solve this or what could it be?

Thanks.
 

kanewolf

Titan
Moderator
There are two 8 pin. One by the front edge of the board and one by the back corner. In addition there is a 4 pin 12V plug next to the 24pin. I don't know what the "Aux power-in" does, (my guess is PCIe slot power) and it isn't obvious to me if it is optional ...
 
Dec 7, 2018
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So, I'm plugging the power cables in the connectors marked.

https://imgur.com/a/j9ENK32

I read in the manual the following regarding the AUX Power in:

10.1.3 Supplemental 12-V Power-In Connector
By default, the server board can provide up to 180 W of total power to the six PCIe* add-in card slots. To
support power requirements above this limit, the server board includes one white 2x2-pin power-in
connector that can be used to deliver up to 216 W of additional power to the server board. In an Intel
chassis, this connector is cabled to a matching 2x2 connector on a power distribution board. A power budget
for the complete system should be performed to determine how much supplemental power is available to
support any high power add-in cards.
 

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