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Synology 16GB DDR4 SO-DIMM ECC Memory Module

BH #SYD4ES0316G • MFR #D4ES03-16G
34 reviews
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Synology 16GB DDR4 SO-DIMM ECC Memory Module
Key Features
  • For Select Synology NAS Arrays
  • 16GB (1 x 16GB) Capacity
  • 260-Pin SO-DIMM
  • Unbuffered, ECC
Refresh NAS performance with the 16GB DDR4 SO-DIMM ECC Memory Module from Synology. Unbuffered and utilizing error-correcting code (ECC), this 260-pin SO-DIMM module provides 16GB of DDR4 RAM that is compatible with select Synology NAS arrays.
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Synology DDR4 SO-DIMM ECC Overview

Refresh NAS performance with the 16GB DDR4 SO-DIMM ECC Memory Module from Synology. Unbuffered and utilizing error-correcting code (ECC), this 260-pin SO-DIMM module provides 16GB of DDR4 RAM that is compatible with select Synology NAS arrays.

Compatbility
  • 25 Series: DS1825+, DS1525+, DS925+, and DS725+
  • 23 Series: DS1823xs+, DS923+, and DS723+
  • 22 Series: RS822RP+, RS822+, DS3622xs+, DS2422+, and DS1522+
  • 21 Series: RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+, and DVA3221
UPC: 846504006465

Synology DDR4 SO-DIMM ECC Specs

Key Specs
Compatibility
Synology: DiskStation DS1825+ / DS1525+ / DS925+ / DS725+ / DS1823xs+ / DS923+ / DS723+ / DS3622xs+ / DS2422+ / DS1522+ / DS1821+ / DS1621xs+ / DS1621+ / DVA3221
Synology: RackStation RS822RP+ / RS822+ / RS1221RP+ / RS1221+ / RS1226RP+ / RS1226+ / RS826RP+ / RS826+
Capacity
16 GB
Memory Type
DDR4
Compatibility
Synology: DiskStation DS1825+ / DS1525+ / DS925+ / DS725+ / DS1823xs+ / DS923+ / DS723+ / DS3622xs+ / DS2422+ / DS1522+ / DS1821+ / DS1621xs+ / DS1621+ / DVA3221
Synology: RackStation RS822RP+ / RS822+ / RS1221RP+ / RS1221+ / RS1226RP+ / RS1226+ / RS826RP+ / RS826+
Capacity
16 GB
Memory Type
DDR4
DIMM Type
260-Pin SO-DIMM
Buffered/Registered
No
Error Correction (ECC)
ECC
Packaging Info
Package Weight
0.065 lb
Box Dimensions (LxWxH)
5.05 x 3.55 x 0.5"

Synology DDR4 SO-DIMM ECC Reviews

love it

By maya
Rated 5 out of 5
Date: 2026-07-04

helps with speet!

Perfect fit & fast delivery

By James
Rated 5 out of 5
Date: 2025-12-15

New Synology DS925+ came with 4GB and an open slot. B&H made it easy to order correct module for a good price. Order was fulfilled quickly and part arrived promptly. Powered down, pulled drives for access, new module clicked into place, reinserted drives and powered up. Now I have 8GB of memory that will meet my needs for the foreseeable future.

See any errors on this page?

Is this module also compatible with the 1525+, or ...

Is this module also compatible with the 1525+, or is there a different one for the 1525+? If different, can you point me to it?
Asked by: Bob
Yes, the Synology 16GB DDR4 SO-DIMM ECC Memory Module is compatible with the Synology DiskStation DS1525+.
Answered by: JP A
Date published: 2025-12-08

Is the RAM DDR4 ECC Unbuffered SODIMM 16GB ...

Is the RAM DDR4 ECC Unbuffered SODIMM 16GB (D4ES01-16G) compatible with the DS1522+ ?
Asked by: Mark
yes
Answered by: Preston
Date published: 2024-12-18

Is the RAM DDR4 ECC Unbuffered SODIMM 16GB ...

Is the RAM DDR4 ECC Unbuffered SODIMM 16GB (D4ES01-16G) compatible with the DS923+?
Asked by: Talal
yes
Answered by: Preston
Date published: 2024-12-20

Is this ram compatible with RS822RP+?

Is this ram compatible with RS822RP+?
Asked by: Dan
Yes, the Synology 16GB DDR4 SO-DIMM ECC Memory Module is compatible with the Synology RS822RP+ 4-Bay NAS, B&H # SYRS822RP.
Answered by: Kenneth C
Date published: 2023-08-08

Is this RAM compatible with DS1621xs+?

Is this RAM compatible with DS1621xs+?
Asked by: Yuxiang
Synology 16GB DDR4 SO-DIMM ECC Memory Module is not compatible with Synology DiskStation DS1621xs+.
Answered by: Boyd H
Date published: 2024-12-26

Is the 16GB DDR4 SO-DIMM ECC Memory Module from ...

Is the 16GB DDR4 SO-DIMM ECC Memory Module from Synology compatable with the DS925+?
Asked by: Tilghman
No, the Synology 16GB DDR4 SO-DIMM ECC Memory Module BH # SYD4ES0116G is not compatible with the DS925+. For the DS925+, the correct RAM module for it will be the Synology 16GB DDR4 SO-DIMM ECC Memory Module BH # SYD4ES0316G.
Answered by: JP A
Date published: 2025-09-07

What's the speed of this DDR4 module, such as ...

What's the speed of this DDR4 module, such as 2666 or 3200? what's its CL value?
Asked by: Yuxiang
This RAM is offered as model specific upgrade. The manufacturer does not list specs for it.
Answered by: Reuben K
Date published: 2022-06-01

Is this compatible with the DS1522?

Is this compatible with the DS1522?
Asked by: Glen
Yes, the Synology 8GB DDR4 SO-DIMM ECC Memory Module (BH #SYD4ES028G), is compatible with the Synology DiskStation DS1522+ 5-Bay NAS Enclosure.
Answered by: Luis F
Date published: 2024-04-01
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