Intel RES2SV240 Error LED headers

[linkyone]

I have an Intel RES2SV240 expander card with an Adaptec 5805Z in a Norco 4220 chassis. Everything works great and has been for over a year now. Recently I've read on this forum that I had error LEDs in my Norco chasses. I looked at the back-planes and found four pins on the far left (facing the front of the chassis). I discovered that if I shorted these pins to ground, the error LEDs would illuminate.

The Intel expander card is advertised to have 2x12 pin discreet error LED headers. I hooked up some extra LEDs to the headers (prior to connecting to Norco back-plane) and instructed the Adaptec RAID card to blink all drives. The result, nothing. I tested voltage, continuity, changed polarity, and still have no response from these headers.

I scoured the internet for some information about the two 4x1 headers on the left side of the card and found nothing. My card is identical to the one pictured on Intel's site except I have an extra header on the left side that isn't pictured, or documented.

Does anyone know what this is? Or why the headers aren't working?

All devices are connected with SFF-8087 cables. Ports 1&6 are connected to Adaptec RAID. Ports 2-5 are connected to back-plane 2-5 respectively.

 

[omniscence]

I used the LED headers on the Intel expanders and know that they work. I do not remeber correctly which of the pins were the ones that have to be connected to the backplanes. Note that most backplanes only feature a single pin per LED, while the expander has two.

 

[linkyone]

I used the LED headers on the Intel expanders and know that they work. I do not remeber correctly which of the pins were the ones that have to be connected to the backplanes. Note that most backplanes only feature a single pin per LED, while the expander has two.

Is the output a simple 3 or 5 volt on one pin and GND on the other? Or do I need to supply something to one of the two pins so the expander can short the pins together when "illuminating".

I did some testing and yes, my backplane only has four pins, one for each drive. I grounded each pin and got the respective error LED to illuminate.

Does your expander have two jumpers labeled J1A1 and J1A2? I can't find them documented anywhere! Is there a diagnostics or config mode or option BIOS on the expander?

 

[linkyone]

I finally figured out the pin-out for the headers. I contacted Intel and they gave me the excuse that it might be incompatible with the Adaptec 5805Z HBA. I find that hard to believe.

omniscence, what HBA are you using?

 

[omniscence]

It was an LSI 9211-8i. The expander identifies itself as a SAS device under Linux and I can switch the LEDs on and off just by writing to special sysfs entries. I did not have to do anything special to get it working, it worked out of the box. The exact pinout was not documented, I figured it out with a multimeter and by try and fail.

 

[linkyone]

It was an LSI 9211-8i. The expander identifies itself as a SAS device under Linux and I can switch the LEDs on and off just by writing to special sysfs entries. I did not have to do anything special to get it working, it worked out of the box. The exact pinout was not documented, I figured it out with a multimeter and by try and fail.

Would you be so kind as to share your code to enable the LEDs? This would help me test my wiring.

I've contacted Intel but they are worthless when it comes to support. They just send me links to PDFs I've already read.