One possibility that comes to mind quickly is that it has two network 
cards built in.  The reason for this could be to allow for two separate 
network connections to be made to allow for redundancy in case of a 
failure on one of them.
What make/model is the motherboard?


Tony Mayer


Andrew Raaberg wrote:
> does anyone know anything about why a motherboard has two rj-45 jacks?
>    
>   what are the configuration possebilities i could research?
>
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