随着时间的推移，更多的设备被集成到主板上。
Over time, more devices have been integrated into the motherboard.
许多厂商曾尝试过不同程度的集成，将一些甚至全部这些设备都安装在主板上。
Many manufacturers have tried different levels of integration, some or even all of these devices are installed on the motherboard.
如果被集成的部件不能被移动，则很难升级产品规格，而且高度集成的主板经常需要非标准机箱。
If the integrated parts can not be mobile, it will be difficult to upgrade product specifications, and highly integrated motherboard often requires non-standard chassis.
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