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Hello

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Let's take a look at the importance of understanding the motherboard block diagram

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When we get a motherboard

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What chipset does this motherboard use?

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Does the EC come with a program?

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What are its timing sequence characteristics and so on

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We can find the answer in this block diagram of the motherboard

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Now let's take a look

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It's a block diagram of this motherboard

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From this block diagram, we can see the two big boxes in the middle

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Above is the CPU

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Below is the PCH

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Here is a codename

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For example, the code name of the CPU is Skylake

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This represents the 6th generation CPU

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This represents the PCH bridge (chip) of the 100 series

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In addition, we can also see the affiliation between each device

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For example, when the USB interface does not function properly

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We need to think about what causes the USB interface to malfunction

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Could it be a graphics card issue?

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Could it be the CPU problem?

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Could it be due to memory reasons?

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We can find the problem through the affiliation of the block diagram of the motherboard

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The USB interface is managed by the PCH through the USB bus

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From here it is clear that PCH damage is one of the reasons for the malfunctioning USB

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We can also judge whether this EC has a program through the block diagram

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In addition, we can also know which page of each module is in this picture through the number provided in the diagram

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For example, this EC, it's on page 24

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This is the information we can get from a block diagram