Synology DDR4 Memory Module
Always select authentic Synology memory modules from local distributors for optimum compatibility and reliability. Installation of non-Synology memory modules can lead to system instability or boot failures. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. For more information on memory upgrade limitations, visit here.
Notes:
- Certain models may not be available in your location. Please contact your local distributors for more information.
- Please refer to Synology Products Compatibility List for a complete list of all the memory modules manufactured by Synology.
RDIMM
D4ER01-16G
- DDR4 ECC Registered DIMM
- EAN: 4711174724826
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- FS series:FS6400, FS3600, FS3410, FS3400
- SA series:SA3610, SA3600, SA3410, SA3400
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
D4RD-2666-32G
- DDR4 ECC Registered DIMM
- EAN: 4711174723577
- Capacity: 32GB
- Warranty: 5 Years
Applied Models:
- FS series:FS6400, FS3600, FS3400, FS3017, FS2017
- SA series:SA3600, SA3400
- 17 series:RS18017xs+
Notes:
- For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
- Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
D4ER02-32G
- DDR4 ECC Registered DIMM
- EAN: 4711174726516
- Capacity: 32GB
- Warranty: 5 Years
Applied Models:
- FS series:FS3600, FS3410, FS3400
- HD series:HD6500
- SA series:SA6400, SA3610, SA3600, SA3410, SA3400
- DP series:DP7200, DP7400
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
D4ER01-64G
- DDR4 ECC Registered DIMM
- EAN: 4711174725083
- Capacity: 64GB
- Warranty: 5 Years
Applied Models:
- SA series:SA6400
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
SODIMM
D4NESO-2666-4G
- DDR4 non-ECC Unbuffered SODIMM
- EAN: 4711174723669
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 24 series:DS224+
- 23 series:DS423+
- 20 series:RS820RP+, RS820+, DS920+, DS720+, DS420+, DS220+
- 19 series:DS2419+II, DS2419+, DS1819+, DVA3219
- 18 series:DS1618+
D4ES01-4G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174724031
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 21 series:RS1221RP+, RS1221+, DS1821+, DS1621+
D4ES02-4G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174724383
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 23 series:DS923+, DS723+
- 22 series:RS822RP+, RS822+, DS2422+
D4NS01-4G
- DDR4 non-ECC Unbuffered SODIMM
- EAN: 4711174726431
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 25 series:DS425+, DS225+
D4ES04-4G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174726448
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 25 series:DS925+, DS725+
D4ES01-8G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174724055
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- 21 series:RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+
D4ES03-8G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174726455
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- 25 series:DS1825+, DS1525+, DS925+, DS725+
D4ES02-8G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174724390
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- 23 series:DS1823xs+, DS923+, DS723+
- 22 series:RS822RP+, RS822+, DS3622xs+, DS2422+, DS1522+
D4ECSO-2666-16G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174723676
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- FS series:FS1018
- 21 series:RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, DVA3221
- 20 series:RS820RP+, RS820+
- 19 series:DS2419+II, DS2419+, DS1819+, DVA3219
- 18 series:DS3018xs, DS1618+
- 17 series:DS3617xs
Notes:
RS820+/RS820RP+ does not support the ECC feature, regardless of whether the expansion memory is ECC or non-ECC.
D4ES01-16G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174724406
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- 23 series:DS1823xs+, DS923+, DS723+
- 22 series:RS822RP+, RS822+, DS3622xs+, DS2422+, DS1522+
D4ES03-16G
- DDR4 ECC Unbuffered SODIMM
- EAN: 4711174726462
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- 25 series:DS1825+, DS1525+, DS925+, DS725+
UDIMM
D4NE-2666-4G
- DDR4 non-ECC Unbuffered DIMM
- EAN: 4711174723515
- Capacity: 4GB
- Warranty: 3 Years
Applied Models:
- 18 series:RS2818RP+, RS2418RP+, RS2418+
Notes:
Minimum DSM version requirement: 6.2.2
D4EU01-4G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174724048
- Capacity: 4GB
- Warranty: 5 Years
Applied Models:
- 21 series:RS2821RP+, RS2421RP+, RS2421+
D4EC-2666-8G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174723522
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- SA series:SA3400D, SA3200D
- UC series:UC3400, UC3200
- 21 series:RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+
- 19 series:RS1619xs+
- 18 series:RS3618xs
- 17 series:RS4017xs+, RS3617xs+, RS3617RPxs
D4EU01-8G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174724420
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- FS series:FS2500
- 23 series:RS2423RP+, RS2423+
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
D4EU02-8G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174726479
- Capacity: 8GB
- Warranty: 5 Years
Applied Models:
- 25 series:RS2825RP+
D4EU02-16G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174726486
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- FS series:FS2500
- 25 series:RS2825RP+
- 23 series:RS2423RP+, RS2423+
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
D4EC-2666-16G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174723751
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- SA series:SA3400D, SA3200D
- UC series:UC3400, UC3200
- 21 series:RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+
- 19 series:RS1619xs+
- 18 series:RS3618xs, RS2818RP+, RS2418RP+, RS2418+
- 17 series:RS4017xs+, RS3617xs+, RS3617RPxs
Notes:
To install this memory module on RS4017xs+, please make sure your Synology NAS runs on DSM 6.2.2-24922-6 or above.
D4EU01-16G
- DDR4 ECC Unbuffered DIMM
- EAN: 4711174724437
- Capacity: 16GB
- Warranty: 5 Years
Applied Models:
- FS series:FS2500
- 23 series:RS2423RP+, RS2423+
Notes:
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.

