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Green circuit board with black memory chips and gold edge connectors

OWC

OWC 16GB DDR4 2666 CL19 ECC SODIMM 2Rx8 260-pin 1.2V memory upgrade

SKU CH-Z6CV-GBZGD

Adds 16 GB DDR4 2666 ECC SODIMM memory to compatible ASUSTOR NAS models

  • Capacity16GB
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB

  • 16GB DDR4 2666 CL19 ECC SODIMM expands NAS capacity
  • JEDEC-standard 1.2V unbuffered module ensures warranty-safe upgrade
  • 2Rx8 260-pin design fits ASUSTOR Lockerstor 8 and 10/12-bay models
  • Backward compatible with 2400 and 2133 MHz systems
  • OWC lab-tested reliability with lifetime warranty and free tech support

OWC 16GB DDR4 2666 ECC SODIMM

This OWC module provides 16GB of DDR4 2666 memory with ECC error correction. It is built for ASUSTOR NAS models including the AS6504RD, AS6504RS, AS6508T, AS6510T and AS6512RD. The unbuffered 2Rx8 design operates at 1.2V and fits the standard 260-pin SODIMM slot.

ECC at CL19 latency

The single specification that determines fit is the ECC unbuffered configuration combined with CL19 timing at 2666 MT/s. Systems requiring registered or non-ECC modules will not accept this part. Verify that your ASUSTOR unit lists the AS-16GECD4 part number before ordering.

Sustained operation in NAS enclosures

Without a heat spreader, the module relies on chassis airflow during continuous file-serving workloads. JEDEC and ROHS compliance ensures stable voltage regulation across long uptime periods. Backward compatibility with 2400 and 2133 speeds allows the stick to clock down if the platform demands it.

Highlights

  • 16GB DDR4 2666 CL19 ECC SODIMM expands NAS capacity
  • JEDEC-standard 1.2V unbuffered module ensures warranty-safe upgrade
  • 2Rx8 260-pin design fits ASUSTOR Lockerstor 8 and 10/12-bay models
  • Backward compatible with 2400 and 2133 MHz systems
  • OWC lab-tested reliability with lifetime warranty and free tech support

Specifications

BrandOWC
Part Number2C6D42R816GB
Capacity16GB
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemASUSTOR AS6504RD
ASUSTOR AS6504RS
ASUSTOR AS6508T
ASUSTOR AS6510T
ASUSTOR AS6512RD

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Questions about this item

What does the 2666 speed mean once the module is installed in my ASUSTOR NAS?

The module runs at 2666 MT/s and will down-clock to 2400 or 2133 MT/s if the system requires a lower speed.

How does the PC4-21300 rating limit real-world throughput?

PC4-21300 is the JEDEC standard name for DDR4 2666; the NAS memory controller determines the actual bandwidth you see.

Will this 260-pin SODIMM fit the memory slots in an AS6508T or AS6512RD?

Yes, the 260-pin DDR4 SODIMM form factor matches the slots used in those ASUSTOR models.

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