R500 button help

[metalball]

hey all, i have a question. under the Optical Drive there is a slide button which pulls out something that i can't find what it does...
i have tried to find some graphic user guide of the laptop to see what is it, but found none...
could anyone tell me what that button does?

[beGi]

That slide button gives you access to ultrabay (slot where your optical drive is located)...

Various devices can be inserted there, see here for details:

http://www.thinkwiki.org/wiki/Ultrabay