Earthwalk Ebuddy

upgrading ram on a earthwalk ebuddy 6.2?

i got an earthwalk ebuddy 6.2 and 2×256 ram card for it but i can only find 1 ram slot, but the online guide says that there can be 2 ram cards so i wanna know where does the other ram card go

I looked up the User Manual for Your Computer, and it says that there is only one memory module.
The other ram slot is a 64MB ram that is integrated into the system board itself. Sorry.