OWC 8GB DDR4 2666 CL19 ECC SODIMM memory upgrade

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.