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What is Serial Presence Detect?

April 26, 2017detect presence serial

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What is Serial Presence Detect?

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Serial Presence Detect (SPD) is a small EEPROM mounted on the DIMM that contains information about the DIMM module’s size, data width, speed, voltage, etc. The Serial Presence Detect helps the system bios identify the memory as the correct type and properly configure the memory.