Synology D4EC-2666-16G 16GB (16GB x 1) DDR4-2666 PC4-21300 1.2V DDR4 SDRAM UDIMM Unbuffered ECC CL19 NAS RAM Memory Module

$1,399.00

Interface Types:DDR4 DIMM 288pin
Form Factor:DDR4 UDIMM
Electrical Interface:PC4-21300
RAM:16GB
Voltage:1.2V

Description

Synology D4EC-2666-16G 16GB (16GB x 1) DDR4-2666 PC4-21300 1.2V DDR4 SDRAM UDIMM Unbuffered ECC CL19 NAS RAM Memory Module - Brand New

Synology D4EC-2666-16G 16GB (16GB x 1) DDR4-2666 PC4-21300 1.2V DDR4 SDRAM UDIMM Unbuffered ECC CL19 NAS RAM Memory Module - Brand New

Synology D4EC-2666-16G – Key Features

  • 16 GB capacity — single DIMM for expanding system memory.

  • DDR4-2666 MHz (PC4-21300) — modern high-speed memory standard.

  • ECC (Error-Correcting Code) — detects and corrects memory errors to improve data integrity and system stability.

  • Unbuffered (UDIMM) form factor — standard non-registered module.

  • 288-pin desktop/server DIMM — fits into supported NAS and server motherboards.

  • 1.2 V operating voltage — consistent with standard DDR4 power.

  • Ideal for NAS / home server use — enhances memory capacity for multitasking, caching, and running apps.

  • Improves reliability — ECC helps reduce crashes and data corruption in always-on systems.

Compatible with the following Synology Units:

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

Compatibility

SeriesCompatible 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
Note: For RS4017xs+, Synology notes a minimum DSM requirement (DSM 6.2.2-24922-6 or later) when using this module.

Specifications

D4EC-2666-16G Specifications
BrandSynology
Manufacturer Part # (MPN)D4EC-2666-16G
Capacity16GB
Memory TypeDDR4 ECC Unbuffered DIMM (UDIMM)
SpeedDDR4-2666 (PC4-21300)
Form Factor288-pin DIMM
ECC SupportYes (ECC)
Buffered / RegisteredNo (Unbuffered / Unregistered)
Voltage1.2V
EAN4711174723751
Warranty5 Years
Compatibility note: For RS4017xs+, Synology requires DSM 6.2.2-24922-6 (or later) to install this module.

ROHS Compliant

Weight: 0.5 lb

Warranty: 1 Year DiscTech

Condition

Warranty

1 Year DiscTech Warranty

4.7 Overall6966 Reviews