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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 8GB DDR4 2666 CL19 ECC SODIMM memory upgrade

SKU CH-T51A-F9TFB

8GB DDR4 2666 ECC SODIMM for ASUSTOR AS6504RD, AS6504RS, AS6508T, AS6510T, AS6512RD NAS systems

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 8GB

  • ECC protection guards data integrity in NAS systems
  • 2666 MHz DDR4 speed matches ASUSTOR Lockerstor requirements
  • 2 V operation reduces power draw and heat
  • Single 8 GB module installs in one 260-pin slot
  • Backward compatible with 2400 MHz and 2133 MHz systems

8GB DDR4 ECC SODIMM for ASUSTOR NAS

This 8GB DDR4 2666 CL19 ECC unbuffered SODIMM adds error-correcting memory to compatible ASUSTOR NAS models including the AS6504RD, AS6504RS, AS6508T, AS6510T and AS6512RD. It installs in a standard 260-pin slot at 1.2V and replaces the ASUSTOR AS-8GECD4 part. The module is JEDEC and RoHS compliant for a warranty-safe upgrade.

Capacity and headroom at 2666 MT/s

A single 8GB rank handles typical NAS workloads such as file serving, backup and light virtualization with room for concurrent tasks. The CL19 latency and 2666 MT/s data rate deliver steady throughput for multi-user access. Systems requiring more than 8GB per slot or higher frequencies will exceed what this module provides.

Upgrade path from 2133 or 2400 MT/s DDR4

The module is backward compatible with 2133 and 2400 MT/s DDR4, so it can replace slower sticks in the same platforms without configuration changes. The jump is worthwhile when ECC protection becomes a priority for data integrity or when the NAS reports memory pressure under current loads. Builders needing non-ECC memory or capacities beyond 8GB per slot should look elsewhere.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $59.99
Cheaper than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $7.50 per GB
Cheaper than about 54% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2C6D41R808 GB
Total capacity8 GB
Product type260-Pin DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUSTOR AS6504RD
ASUSTOR AS6504RS
ASUSTOR AS6508T
ASUSTOR AS6510T
ASUSTOR AS6512RD

Other versions of this model

5 more in the same range

Questions about this item

Will the 2666 MHz CL19 ECC SODIMM run reliably alongside existing 2400 MHz modules in my ASUSTOR AS6508T?

Yes, the module is backwards compatible with 2400 MHz and 2133 MHz systems, so it will down-clock to match the slower installed memory.

How can I confirm the 8 GB ECC module is detected and error-correction is active after installation?

Check the ASUSTOR storage-manager dashboard; it will show the total memory as 8 GB per module and report ECC status as enabled when the system posts.

Does the package include only the single 260-pin SODIMM or are tools and thermal pads also supplied?

The box contains only the 8 GB DDR4 2666 CL19 ECC SODIMM; no screwdriver, thermal pad or additional hardware is included.

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