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R710 fan pin layout

Hello All,

I have a R710 motherboard that needs fans. I do not have the server case, I do not have the original fans or the fan chassis. However, I do have two CPU coolers. I would love to use them, but the plugs don't match. The original fans' being a square 4-pin connector, and the CPU coolers' being a linear 4-pin connector. I figured I could convert the 4-pin linear into a square plug, but I would need to know the pin layout, i.e. which is ground, which is signal, etc.

To summarize, does anyone know the pin layout for the fans in the R710? I could not find the answer anywhere else, and technical support was pointless considering I do not have a service tag number.

Thank you. 

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2 Replies
pingol
1 Nickel

Re: R710 fan pin layout

Only just over 3 years late, but the info may be useful to someone. Each plug-in fan cassette for the PowerEdge R710 has a floating 4 pin (2 rows of 2 pins) female connector. I believe the pitch is around 2.2mm but I haven't been able to identify the connector or the logo on it. That female connector has a polarizing lump on one side.

The mating PCB plug has a 1/4" square hole which accepts and centralises the fan connector when the cassette is plugged in. The side wall of the male header has a slot in it which accepts the polarizing lump on the female fan connector.

Imagine that slot in the PCB header is on the left side. We then have :

Top Left        RED        +12V power from mobo.

Top Right      BLU        PWM speed demand I/P. Mobo drives this with an open collector, fan does pullup.

Bottom Left   YEL        Open collector Tacho O/P from fan.

Bottom Rgt.  BLK        GND from mobo.

 

Hope that helps somebody. If anybody discovered the details of the connector I would love to know. The logo is like an embossed square, with small small notches out of the sides, and a sunken ltter J in it/ The J has a large top bar, like a capital T does. Thanks.

NOTE : This information is offered in good faith but is not warranted to be correct. Any and all use of it, or risk taken with it, is your responsibility.

 

pingol
1 Nickel

Re: R710 fan pin layout

Only just over 3 years late, but the info may be useful to someone. Each plug-in fan cassette for the PowerEdge R710 has a floating 4 pin (2 rows of 2 pins) female connector. I believe the pitch is around 2.2mm but I haven't been able to identify the connector or the logo on it. That female connector has a polarizing lump on one side.

The mating PCB plug has a 1/4" square hole which accepts and centralises the fan connector when the cassette is plugged in. The side wall of the male header has a slot in it which accepts the polarizing lump on the female fan connector.

Imagine that slot in the PCB header is on the left side. We then have :

Top Left RED +12V power from mobo.

Top Right BLU PWM speed demand I/P. Mobo drives this with an open collector, fan does pullup.

Bottom Left YEL Open collector Tacho O/P from fan.

Bottom Rgt. BLK GND from mobo.

 

Hope that helps somebody. If anybody discovered the details of the connector I would love to know. The logo is like an embossed square, with small small notches out of the sides, and a sunken ltter J in it/ The J has a large top bar, like a capital T does. Thanks.

NOTE : This information is offered in good faith but is not warranted to be correct. Any and all use of it, or risk taken with it, is your responsibility.