Houstin, We Have a Problem

Dell C6005/Tyan S8208 Power Connector Pinout

Posted by houstin on July 14
Posted in: Datacenters, Distilled Nerd, Sys Admin.

 

 

 

I picked up a 3 node C6005 off of ebay awhile ago, and while I love the systems for their cost and ability, the chassis they are in leaves a lot to be desired for the home lab.  So I’ve been attempting to figure out how to run the nodes outside their nurturing cocoon.  Tyan lists on their datasheet that it uses a “Proprietary 20-pin (12V single input) power connector” so I pulled the server out of the rack and started taking some notes.
c6005 Power ConnectorOnce I had an idea of what the connector looked like I could measure the voltage at each pin.  First odd thing is that when each node is ‘off’ pins 1 through 8 are all at 1V.  Once powered they are all 12V.  The other Yellow wire (pin 18) is the only 5V line.  All of the black lines (11 – 17 & 19) are Ground.  Pin 20, the Brown line, I’m not quite sure what it is.  It goes to a 2 pin header on top of the power distribution board.  My current thoughts are either a fan speed indicator or a “PSU on” control.

Also!  Header “U15”  by the USB port on the board are the power switch pins.

 

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