Thank you for helping me in solving my issue with the ram upgrading,it is very much appreciated,most part of my question was answered,the ram installed was double sided, do I have to stick to this double sided rams when upgrading to more rams or can choose single sided rams as well,and will this can possible consider as ram mixing and cause error message 201?
The manual say that this model can take single or double sided rams, but did not mention about mixing rams,though it stress on using symetrical rams.