4GB DDR4 SO-DIMM ECC Unbuffered Memory Module from Synology.
Unbuffered and utilizing error-correcting code (ECC), this 260-pin SO-DIMM provides 4GB of DDR4 RAM. The module is compatible with the Synology DS923+, DS723+ RS822RP+, RS822+, DS2422+

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Synology 4GB DDR4 ECC Unbuffered SODIMM RAM
4GB DDR4 SO-DIMM ECC Unbuffered Memory Module from Synology.
Unbuffered and utilizing error-correct
