I have a Gateway M-6885u which had a DA0SA1MB6E0 Rev E motherboard which went bad. This motherboard had a maximum memory capacity of 4Gb.
I purchased a refurbished motherboard on Ebay, same model exactly. The new motherboard only has a memory capacity of 2Gb.
Could you explain why the difference, and is there any way to increase the capacity?
Thank you in advance for the assistance.

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