Difference between GBIC and SFP module GBIC -

https://supportforums.cisco.com/t5/getting-started-with-lans/difference-between-gbic-and-sfp-module/td-p/1086433

Differences Between XFP and SFP

http://www.differencebetween.net/technology/internet/differences-between-xfp-and-sfp/

ARM architecture

https://en.wikipedia.org/wiki/ARM_architecture

CuBox

https://en.wikipedia.org/wiki/CuBox

SolidRun

https://en.wikipedia.org/wiki/SolidRun