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Green 288-pin DDR4 UDIMM with black chips, single 16GB module

A-Tech

A-Tech 16GB DDR4 2666MHz ECC UDIMM 2Rx8 CL19 1.2V 288-pin Server Memory

SKU CH-6FGN-NS4SF

16GB DDR4 2666MHz ECC UDIMM with CL19 latency and 1.2V operation for server upgrades

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • 16GB ECC UDIMM adds data-integrity protection for servers
  • DDR4 2666MHz PC4-21300 speed supports demanding workloads
  • CL19 latency at 1.2V standard voltage balances performance and efficiency
  • 2Rx8 dual-rank 288-pin layout fits compatible DIMM slots
  • Tested with major-brand chips for dependable server operation

16GB DDR4 2666MHz ECC UDIMM

This 16GB DDR4 2666MHz ECC UDIMM module provides error-correcting memory for compatible servers and workstations. It operates at 1.2V with a CAS latency of CL19 and uses a 2Rx8 rank configuration. The 288-pin DIMM is designed as a direct replacement for the Synology D4EC-2666-16G part number.

Installation and common issues

Installation follows standard DIMM procedures: power down the system, open the chassis, align the notch with the slot key, and press firmly until the retention clips engage. The unbuffered design means no register delay, but the motherboard must explicitly support ECC UDIMM; inserting the module into a board that only accepts non-ECC or registered DIMMs will prevent boot or disable the ECC function.

Pre-order checks

Verify that your system accepts DDR4 2666MHz ECC UDIMM modules in a 288-pin form factor and supports 16GB single-module capacity. Confirm the maximum memory speed and voltage tolerance match 2666MHz and 1.2V specifications. Check the number of available DIMM slots and the vendor's qualified vendor list to ensure this 2Rx8 module is validated for your specific platform.

Highlights

  • 16GB ECC UDIMM adds data-integrity protection for servers
  • DDR4 2666MHz PC4-21300 speed supports demanding workloads
  • CL19 latency at 1.2V standard voltage balances performance and efficiency
  • 2Rx8 dual-rank 288-pin layout fits compatible DIMM slots
  • Tested with major-brand chips for dependable server operation

Specifications

BrandA-Tech
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions about this item

How do I confirm the ECC UDIMM is recognised at 2666 MHz after installation?

Enter the system BIOS or UEFI and check the memory information screen; it should show a single 16 GB module running at 2666 MHz with ECC active.

What comes in the box and do I need anything else to install it?

The package contains one 16 GB DDR4 2666 MHz ECC UDIMM; no extra parts are required if your server or workstation has a free 288-pin DIMM slot.

Should I choose the 2Rx8 version or look for a different rank configuration?

This module uses a 2Rx8 organisation, which matches the Synology D4EC-2666-16G specification; select it when your system requires that rank layout.

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