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Single green 260-pin DDR4 SODIMM module with black chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz ECC SODIMM 2Rx8 CL19 1.2V Synology DS1522+

SKU CH-FJC4-4QHTN

A 16 GB DDR4 ECC SODIMM running at 2666 MHz CL19 and 1.2 V, validated for Synology DS1522+ NAS upgrades

  • Capacity16GB (1 x 16GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16 GB ECC SODIMM adds capacity to Synology DS1522+
  • DDR4 2666 CL19 1.2 V delivers rated speed at standard voltage
  • JEDEC and RoHS compliant protects system warranty
  • Unbuffered 2Rx8 260-pin design matches factory slot specification
  • Backward compatible with 2400 and 2133 MHz systems

Synology DS1522+ memory upgrade

This 16GB DDR4 2666MHz ECC SODIMM is built for the Synology DiskStation DS1522+. It adds a single 16GB module that installs in the 260-pin slot and runs at 1.2V. The unbuffered 2Rx8 design matches the system's memory controller requirements.

Sustained-load behaviour

ECC circuitry detects and corrects single-bit errors during long file transfers, RAID rebuilds or virtual-machine workloads. CL19 latency and PC4-21300 bandwidth keep throughput steady rather than spiking for short bursts. The module is backwards compatible with 2400MHz and 2133MHz operation if the platform requires it.

Thermals and power

No heat spreader is fitted, so the module relies on the NAS chassis airflow for cooling. At 1.2V the power draw stays low during continuous read and write cycles. Silent operation is maintained because there are no active cooling components on the board.

Highlights

  • 16 GB ECC SODIMM adds capacity to Synology DS1522+
  • DDR4 2666 CL19 1.2 V delivers rated speed at standard voltage
  • JEDEC and RoHS compliant protects system warranty
  • Unbuffered 2Rx8 260-pin design matches factory slot specification
  • Backward compatible with 2400 and 2133 MHz systems

Specifications

BrandOWC
Part Number2C6D42R816GB
Capacity16GB (1 x 16GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStationDS1522+

Questions about this item

Does the 1.2V DDR4 2666MHz module run cool and quiet inside a Synology DS1522+ during continuous operation?

The SODIMM has no heat spreader and operates at the standard 1.2V JEDEC voltage, so it adds minimal heat and makes no noise of its own inside the NAS chassis.

Which slot type must the Synology DS1522+ provide for this 260-pin SODIMM to be installed?

The module requires a standard DDR4 260-pin SO-DIMM slot, which the DS1522+ provides for memory expansion.

Will this 2666MHz CL19 ECC stick down-clock reliably alongside existing 2400MHz or 2133MHz modules in the same NAS?

Yes, the module is backwards compatible with 2400MHz and 2133MHz speeds and will run at the lowest common speed when mixed with slower DIMMs.

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