Re: [LAU] PCIe cards weak?

On 05/11/2013 08:48 AM, Len Ovens wrote:
>
> On Sat, May 11, 2013 10:37 am, Clemens Ladisch wrote:
>> Len Ovens wrote:
>>> This is the first time I have seen this warning:
>>>
>>> "Due to the reduced length of the PCI EXPRESS bus connector and the
>>> resulting lack of mechanical stability, we strongly advise against
>>> transporting cards installed in a computer, unless its chassis or case
>>> provides a dedicated support to keep the card securely in place in order
>>> to avoid physical damage."
>>
>> PCI cards might survive not being fastened with a screw, but I can
>> easily see how a x1 PCIe card would not.
>>
>> (Are there any cases without screws? Is this just a warning against
>> transporting a naked motherboard?)
>
> They are full height cards and the PCIe connector is close to the front.
> Some of them have daughter boards/heatsinks on them. I am thinking they
> are talking about some sort of restraining device for the back end of the
> card as well. It would seem the the majority of the card weight is
> unsupported even with the back bar screw installed. I have seen cases with
> a support in this area (even in PCI days). Funny thing.. it was a rack
> mount Proliant, not meant for travel.

I think they like to support cards well in servers because of the
potential for steady vibrations from fans working them loose over time.
So if it's possible for a PCIe card to work loose from a sudden shock
("NO, dear, I DO love you more than the computer!" CRASH!!), I suppose a
steady diet of vibrations from fans or loud music could happen ...
Possibly made worse by heavier cards with daughterboards or video cards
with their own fans ...

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
http://dancingtreefrog.com
http://clanjones.org/david/
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