Apple iie with switch under case?

[powergs@macgui.com (Sam Latella)]

I just came across an Apple IIe that has a swich underneath the keyboard. 
Once you flick the switch it goes from the Apple //e to Apple ][.   The
Apple //e looks like it was built in 1982, and the case itself is a little
bigger then the other //e I have in use.

Did the IIe case shrink over the years?

Lastly, everytime I boot up this //e with the switch its hard to read the
screen... what could be the possible cause, bad board chip?

Any help would be greatly appreciated.

Sam