system board

详细解释:【电】 主机板

例句：

Peripherals are real devices, such as graphics cards or disks controlled by controller chips on the system board or on cards plugged into it.外设是一些物理设备，比如说图象卡或者磁盘，它们受控于位于主板或者主板上插槽中的控制芯片。