thazlett,Yes I see now what your driving at,however I've flashed my own 5535 to bios 1.05 and in the decription file for that bios is the following text:-
current BIOS V. 1.05:
Solved problems:
- Fix System hang up with memories: Samsung 1GB + Samsung 512MB
- Add Hynix 512MB module support on the system.
- Support Samsung 1GB & Hynix 512MB memory module
-
Fix the wrong RAM size indicated on POST screen while the system was inserted 4GB DDR- Solve issue of system hang up on boot stage when the system was used CPUT5550.
- Solve the black screen after resume from standby mode on Windows XP.
Known errors, problems and restrictions:
- the error message might be found during the test period by toggle program on Window XP Operating system
Additional Information:
- none
So looking at the data sheet(your post) and what the text file for 1.05 bios says, I would say its good to to go for 4GB memory.