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Synology 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module

BH #SYD4ES018G • MFR #D4ES01-8G
33 reviews
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Synology 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module
Key Features
  • 8GB (1 x 8GB) Capacity
  • 260-Pin SO-DIMM
  • Unbuffered, ECC
  • For Use with Select Synology NAS Arrays
Refresh NAS performance with the 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module from Synology. Unbuffered and utilizing error-correcting code (ECC), this 260-pin SO-DIMM provides 8GB of DDR4 RAM. The D4ES01-8G module is compatible with Synology 21-Series NAS arrays, including the DS1821+, DS1621xs+, and DS1621+.
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Capacity
4GB
8GB
16GB
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Synology DDR4 SO-DIMM ECC Overview

Refresh NAS performance with the 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module from Synology. Unbuffered and utilizing error-correcting code (ECC), this 260-pin SO-DIMM provides 8GB of DDR4 RAM. The D4ES01-8G module is compatible with Synology 21-Series NAS arrays, including the DS1821+, DS1621xs+, and DS1621+.

UPC: 846504004058

Synology DDR4 SO-DIMM ECC Specs

Key Specs
Compatibility
Synology: DS1821+ / DS1621xs+ / DS1621+
Capacity
8 GB
Memory Type
DDR4
Compatibility
Synology: DS1821+ / DS1621xs+ / DS1621+
Capacity
8 GB
Memory Type
DDR4
DIMM Type
260-Pin SO-DIMM
Buffered/Registered
No
Error Correction (ECC)
ECC
Packaging Info
Package Weight
0.076 lb
Box Dimensions (LxWxH)
5 x 3.6 x 0.3"

Synology DDR4 SO-DIMM ECC Reviews

Sealed, Secure, and Delivered on Time

By Corey
Rated 4 out of 5
Date: 2026-01-15

Decided to choose B&H due to chearper cost, reviews, and shipping duration. Product was sealed and packaged securly. Arrived on time. Product works as intented for my NAS.

Great Memory Modules!

By Michael
Rated 5 out of 5
Date: 2025-11-24

Great Modules, Easy To Install And NAS Recognized With No Problems. A Bit Pricey But Trying To Keep It All In The Family.

See any errors on this page?

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 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 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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