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mada3k
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RB912 board - new/old revision?

Mon Jul 13, 2015 6:59 pm

Hi,

I've bought a RB912UAG-2HPnD on Ebay. It came new and unused and in anti-static bag. But soon I realized that it differs somewhat. It does identify itself as 912UAG-2HPnD and has a valid license. I tried to find a picture of the same variant, but
was unable to.

Image

Main differences what I noticed:
  • It has BGA type RAM
  • It has gold plated solder pads
  • It lacks the full bridge diodes (D1, D2), only single diodes.
Is this a new revision? prototype?

Either way it works fantastic. The reception is crazy even with lousy old D-Link antennas I had laying around. I have quite bad interference from other apartments, but I gained several Mbps more on average. The next step is to extend it with a 11ac radio.

http://routerboard.com/RB912UAG-2HPnD
Last edited by mada3k on Sun Apr 03, 2016 7:05 pm, edited 1 time in total.
 
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normis
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Re: RB912 board - new/old revision?

Tue Jul 14, 2015 9:37 am

We always update our devices without announcement or name changes, so yes, it is possible. There are currently four revisions to the RB912UAG-2HPnD
 
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honzam
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Re: RB912 board - new/old revision?

Tue Jul 14, 2015 12:22 pm

It would be good if they were registered somewhere differences between revisions ...
 
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normis
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Re: RB912 board - new/old revision?

Tue Jul 14, 2015 12:24 pm

there are no differences that would affect the user.

sometimes we change parts to other manufacturer, sometimes we optimise to make manufacturing easier.
 
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honzam
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Re: RB912 board - new/old revision?

Tue Jul 14, 2015 12:42 pm

Ok :)
 
mada3k
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Re: RB912 board - new/old revision?

Tue Jul 14, 2015 6:40 pm

Thanks for the answer!
 
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chechito
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Re: RB912 board - new/old revision?

Thu Jul 16, 2015 7:56 am

Thanks for the answer!

how much ram and flash??
 
mada3k
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Re: RB912 board - new/old revision?

Tue Aug 18, 2015 3:53 pm

128M Flash / 64M RAM as specified.
 
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Hotz1
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Re: RB912 board - new/old revision?

Fri Aug 21, 2015 1:59 am

there are no differences that would affect the user...
Maybe they don't affect the user right now, but suppose one of the revisions develops a terrible failure rate--maybe low quality capacitors that start failing horribly after a couple years, to pick an arbitrary example. :? Naturally, you want to locate & replace these boards before they start causing unscheduled failures. Out of a hundred of these boards you have deployed, maybe a handful of them are the revision in question... but the only way to find them is to climb every tower and open every case for visual inspection.

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