Technical Snapshot

The Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) is a high-performance DDR4 desktop memory module . Running at 2,666 MT/s, The module provides 4GB of DDR4 memory . Backed by a 5 Years warranty, suited for gaming PCs, productivity workstations, and general desktop computing.

Use Case
Gaming, content creation, desktop computing
Compatibility
DDR4-compatible desktop motherboard
Category
DDR4 ECC UDIMM — Synology Synology DDR4 ECC UDIMM
SYNOLOGY
Synology RAM
Synology Synology DDR4 ECC UDIMM

Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G)

DDR4 · ECC UDIMM · 2,666 MT/s · 4GB

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 2,666 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 4GB
Operating voltage. Higher voltage allows faster speeds but increases power and heat.
Voltage 1.2V
DDR generation. DDR5 offers higher bandwidth and capacity than DDR4, but requires a DDR5-compatible motherboard.
Type DDR4
MPND4EU01-4G
EAN846504004041
CategoryMemory
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Memory Specifications

Memory TypeDDR4
Form FactorECC UDIMM
Total Capacity4GB
Speed2,666 MT/s
Voltage1.2V
ECCYes
Warranty5 Years

Full Specifications

Data sourced from Synology product specifications
Memory
Product LineSynology DDR4 ECC UDIMM
Memory TypeDDR4
Form FactorECC UDIMM
Total Capacity4GB
Module Count1
Module Capacity4GB
Speed2,666 MT/s
Timings & Voltage
Voltage1.2V
ECCYes
Product
BrandSynology
MPND4EU01-4G
EAN846504004041
Warranty5 Years
Physical
Weight0.052 kg
Package Dimensions18.5 x 9.65 x 1.3 cm

Support

Synology Memory Compatibility ToolCheck motherboard compatibility for this module
Synology Support →
Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) DatasheetPDF · Technical specifications
Synology Support →
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Frequently Asked Questions

What motherboards are compatible with this memory?

The Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) requires a DDR4-compatible motherboard. Compatible platforms include AMD AM4 (B550, X570, B450, etc.) and Intel LGA 1700 (B660, Z690) or LGA 1200 (B560, Z590). DDR4 is NOT compatible with DDR5 slots — they use different pin configurations.

What speed does this memory run at?

The Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) runs at 2,666 MT/s. This is a JEDEC standard speed that works automatically without BIOS configuration.

Can I add more memory later?

Yes, the Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) is a single 4GB module. You can add additional compatible DDR4 ECC UDIMM modules to populate empty slots. For best performance, use matched modules of the same speed and capacity to enable dual-channel mode.

Does this memory support ECC error correction?

Yes, the Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) includes ECC (Error-Correcting Code) support, which detects and corrects single-bit memory errors. This is essential for servers, workstations, and mission-critical applications where data integrity is paramount.

What warranty does this memory come with?

The Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G) comes with a 5 Years warranty from Synology.

JSON-LD Structured Data — Product + Breadcrumb
Product: Synology 4GB DDR4-2666 ECC Unbuffered DIMM (D4EU01-4G)
MPN: D4EU01-4G
Schemas: Product + BreadcrumbList
Properties: 10 additionalProperty entries
Related: 4 isRelatedTo links