Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module

If your Synology NAS is struggling with slow file transfers or frequent alerts about low memory, the bottleneck is often the RAM. The Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module is a genuine, system-specific memory upgrade that plugs directly into your device, giving you the extra capacity and reliability needed to keep services running smoothly and without interruption.

Upgrade Your Synology NAS with Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module

Running out of memory can cause your NAS to lag, crash applications, or even fail to boot after an update. This matters because downtime means lost productivity, delayed backups, and frustrated users. The Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module solves the problem by providing a certified, high-speed memory solution that integrates perfectly with Synology hardware, ensuring stable operation and full warranty coverage.

Usages of Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module

Add the module to any compatible Synology NAS that supports a 288-pin DDR4 DIMM slot.

• Expand memory in a DS920+ for smoother multitasking and faster file indexing.
• Upgrade a DS1621+ to support larger virtual machines and container workloads.
• Increase cache size on a DS1821+ to accelerate read/write performance for heavy media libraries.
• Enhance backup server reliability on a DS3617xs by reducing memory-related errors.
• Boost surveillance station capacity on a DS1621xs+ for more simultaneous camera streams.

Key Features of Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module

• Form Factor: DIMM 288-pin. Fits the standard slot in supported Synology models.
• Data Integrity Check: ECC. Detects and corrects memory errors to protect your data.
• Technology: DDR4 SDRAM. Offers higher bandwidth and lower power consumption than older generations.
• Speed: 2666 MT/s (PC4-21300). Provides fast data transfer rates for demanding applications.
• Type: DRAM memory module. Standard volatile memory for active processing tasks.
• Features: Registered. Improves signal stability when multiple modules are used.
• Capacity: 16 GB. Adds a substantial amount of memory for larger workloads.
• Upgrade Type: System specific. Designed to work seamlessly with Synology devices only.
• Memory Specification Compliance: PC4-21300. Guarantees compatibility with the system’s memory controller.
• Memory Clock Speed: 2666 MHz. Ensures consistent performance under load.

Benefits of Synology D4RD-2666-16G 16GB DDR4 2666MHz DIMM Ram Module

You gain reliable, error-checking memory that keeps your NAS running without unexpected crashes, protecting critical files and applications. The higher speed and larger capacity mean faster indexing, smoother multitasking, and quicker response times for users accessing shared folders. Because the module is fully certified by Synology, you retain full warranty support and avoid the risk of incompatibility that can arise with third-party parts. Overall, the upgrade extends the life of your existing hardware, delivering better performance without the cost of a new server.

Specifications