Synology 16GB DDR4 SO-DIMM ECC Memory Module

The Synology D4ES01-16G is a 16 GB DDR4 SO-DIMM memory module that equips supported Synology 22-series NAS systems with the extra capacity they need to stay responsive under load. Once seated in the 260-pin slot of a DS3622xs+, DS2422+, or another compatible chassis, the NAS can cache more data in RAM, speeding up tasks ranging from large file transfers to database queries.

This module uses error-correcting code, so it constantly monitors stored bits and fixes single-bit errors before they cause trouble. That protection is especially valuable when the NAS is running daily backups, hosting virtual machines, or serving many users at the same time. By reducing the risk of crashes or silent data corruption, the memory upgrade helps keep services available around the clock.

Installation is straightforward: power down the NAS, open the memory bay, align the module, and click it into place. After rebooting, DiskStation Manager detects the new memory automatically, and you can confirm the total in the Control Panel. Whether you manage a small business file server, a multimedia library, or a home lab that relies on Docker containers and virtualization, this official Synology module delivers the capacity and reliability required for smooth operation.

• 16 GB DDR4 ECC memory designed to boost Synology NAS performance
• 260-pin SO-DIMM format for direct installation in Synology 22-series models
• ECC technology corrects memory errors and helps protect data integrity
• Officially supported by DS3622xs+, DS2422+, and other 22-series systems
• Unbuffered module supplied as a single 16 GB stick for a clean upgrade