The command dmidecode --type memory retrieves detailed information about the system's memory, including the "Maximum Capacity" field found in the Physical Memory Array (DMI type 16). This lets administrators verify how much RAM the motherboard can accept before purchasing upgrades. The other commands either show the product name (dmidecode -s system-product-name), list storage devices (lsblk), or display CPU details (lscpu), none of which reveal the motherboard's maximum RAM capacity.
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What is `dmidecode` and how does it work?
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Why is knowing the maximum RAM supported important for system administrators?