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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.

商品特色

  • 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

商品規格

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+

商品問答

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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