联想旭日42A内存升级是很多笔记本爱好者常关注的升级事项之一，作为一款配备两个DDRII内存插槽的笔记本，其原装内存容量为2根512MB的DDRII内存，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上，理论上， theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, theoretically, 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特别建议升级后，建议用户自行验证内存的容量是否正确,是否能稳定运行目标应用。