W701/W700 Upgrading 4x2GB ->4x4GB. Where are other 2 slots?

[Tableteer]

Underneath the W701ds, I opened the memory bank cover and discovered, to my surprise, there are were only 2 slots containing the stock Samsung 2GB modules. Could experienced W701/700 owners please enlighten me as to how to access the other 2 slots - where are they?

I ordered my system with 4 modules of 2GB (8GB total). Wish to upgrade to 16 GB total. Crucial sells the appropriate 4GB DDR3 PC8500 1066MHz CL7 RAM modules for $129 each. Same specs as originally installed, just twice capacity at a tolerable price.

[deforest]

The other 2 dimms are under the keyboard. Check the hardware maintenance manual for instructions to getting to these, page 111,
http://www-307.ibm.com/pc/support/site. ... 70385.html