What is the difference between embedded motherboard and ordinary motherboard?

Embedded motherboard is generally understood as a CPU board embedded in the device to do control and data processing. It integrates cup, graphics card and memory on the motherboard. In other words, it integrates all the basic things required by input and output on the motherboard. In addition, the CPU and memory are welded on, which has the advantage of low failure rate of the motherboard, but another disadvantage is low upgradability. The common motherboard provides a series of slots, such as CUP and PCIe, which can be upgraded freely under normal circumstances. Therefore, the power of the embedded motherboard is generally small, generally about 65W, sometimes even as low as 35W, so some embedded motherboard does not need to force heat dissipation, generally no fan, and personal computers almost no, are used in large machinery and CNC machine tools and other equipment. The operating procedure is fixed, generally a single instruction.