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Green circuit board with gold contacts and black memory chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz ECC UDIMM CL19 1.2V 2Rx8 288-pin Synology RS3621RPxs RS3621xs+

SKU CH-W75H-KQETT

16 GB DDR4 2666 MHz ECC UDIMM CL19 1.2 V 2Rx8 288-pin module for Synology RS3621RPxs and RS3621xs+ NAS

  • Capacity16GB (1 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16 GB capacity boosts NAS multitasking headroom
  • ECC UDIMM protects data integrity in Synology RackStation
  • 2666 MHz DDR4 speed matches RS3621RPxs and RS3621xs+ specs
  • 2 V operation keeps power draw low
  • 288-pin CL19 2Rx8 module installs without tools

Synology RS3621RPxs and RS3621xs+ memory upgrade

This 16GB DDR4 ECC UDIMM is validated for Synology RackStation RS3621RPxs and RS3621xs+ systems. It installs as a single module to expand NAS memory capacity. Buyers needing higher-density kits or registered DIMMs for other platforms should verify their hardware requirements first.

DDR4 2666 CL19 ECC unbuffered specification

The module runs at DDR4 2666 (PC4-21300) with CL19 latency at 1.2V. It uses a 2Rx8 288-pin unbuffered layout with on-die error correction. Systems that require registered or load-reduced memory cannot use this part.

JEDEC standard compliance and backward speed support

The DIMM meets JEDEC and RoHS standards for warranty-safe installation. It also operates at 2133MHz and 2400MHz when the host platform dictates lower speeds. No heat spreader is included, so airflow in the chassis must be adequate.

Puntos fuertes

  • 16 GB capacity boosts NAS multitasking headroom
  • ECC UDIMM protects data integrity in Synology RackStation
  • 2666 MHz DDR4 speed matches RS3621RPxs and RS3621xs+ specs
  • 2 V operation keeps power draw low
  • 288-pin CL19 2Rx8 module installs without tools

Especificaciones

BrandOWC
Part Number2E6D42R816GB
Capacity16GB (1 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS3621RPxs
Synology RackstationRS3621xs+

Preguntas sobre este artículo

What does the 2666MHz speed mean for my Synology RS3621RPxs or RS3621xs+ NAS?

The module runs at 2666MHz, matching the native memory controller speed of the RS3621RPxs and RS3621xs+ so the system operates at its rated bandwidth without downclocking.

How does the PC4-21300 designation relate to the DDR4 2666MHz interface in practice?

PC4-21300 is the JEDEC standard name for DDR4 2666MHz; the module plugs into the 288-pin UDIMM slots and will also run at 2133MHz or 2400MHz if the system requires a lower speed.

Will this 288-pin UDIMM fit the memory slots in my RS3621RPxs or RS3621xs+?

Yes, it is a standard 288-pin DDR4 ECC UDIMM, the exact form factor used by the RS3621RPxs and RS3621xs+ for memory expansion.

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