I just discovered this:
http://shop.lenovo.com/SEUILib...0B45CBB39F45EB5B2B986E
It allows for a second hard drive to be added in place of the optical drive. I was curious if this would work on my R50e.
It says compatable with:
ThinkPad R50, R50p, R51, R52, T40, T41, T41p, T42, T42p...