Supermicro SC825 Rev 2?

NablaSquaredG

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Aug 17, 2020
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I noticed that there must be some kind of Rev. 2 for Supermicro SC825 2U chassis...

The main difference seems to be that in Rev. 1 chassis, you cannot place the upper left standoff for E-ATX motherboards:

Rev 1:
1614023656100.png

Rev 2 (taken from newegg):
sc825rev2.jpg


Are there any other differences I haven't noticed yet?
 

BlueFox

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Oct 26, 2015
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The standoff does not go in the location you circled. It's the the one to the right in both photos.
 

NablaSquaredG

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Aug 17, 2020
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Are you sure?

On the picture it looks like Supermicro added a cutout where the standoff needs to go for E-ATX / SSI-EEB boards, but resolution is too low to say for certain
 

BlueFox

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Oct 26, 2015
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Looks like a few boards do have it there, though it's not consistent. Not used in ATX and smaller and some proprietary Supermicro boards have different placement too. The photos you've posted look to be very old however as if my eyes are not mistaken, they have socket 771 mounts.
 

NablaSquaredG

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Aug 17, 2020
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Nope that isn't it, the chassis from the ebay offer has a SAS2 backplane, so not the "B" version. The "B" only version seems to have USB Ports + the optional drive bays over the standard.


Looks like a few boards do have it there, though it's not consistent. Not used in ATX and smaller and some proprietary Supermicro boards have different placement too. The photos you've posted look to be very old however as if my eyes are not mistaken, they have socket 771 mounts.
I was able to position the remaining 8 standoffs for the Gigabyte MZ71-CE0 without any issues - Which is not surprising, because SSI EEB exists since forever.
The chassis previously housed a Socket 1366 motherboard (X8DT3-F)
 

britinpdx

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Feb 8, 2013
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Portland OR
I've also run into this issue on older revs of SM chassis.

I believe that historically the dual CPU versions of the X9 motherboards were the ones that required a "revision M" chassis to support the specific standoff that you identify. To get around the issue I've used appropriately sized M3 plastic female-female standoffs attached to the motherboard prior to installation in the chassis.

If memory serves correctly, the chassis rev is the 10th character in the chassis serial number usually stuck on the left side of the chassis.
 

NablaSquaredG

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Aug 17, 2020
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123456789101112131415
C82500005K50190

Seems like it's Rev K - Does Supermicro at least count alphabetically (M > K)?

I believe that historically the dual CPU versions of the X9 motherboards were the ones that required a "revision M" chassis to support the specific standoff that you identify. To get around the issue I've used appropriately sized M3 plastic female-female standoffs attached to the motherboard prior to installation in the chassis.
Yeah, I'll probably 3D-print something...
 

britinpdx

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Feb 8, 2013
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Portland OR
I believe that you are correct, that rev K is older than rev M. I've got a mixture of rev K and rev M 825/826/836/846 chassis.

Interestingly, the Ultra chassis that I have (which are much newer that the "generic" storage chassis noted above) are a mix of rev A and Rev B, but these chassis only accommodate the Ultra series motherboards so it looks like chassis rev is also chassis series dependent.