4GB D4NESO-2666-4G Replacement DDR4 2666MHz SODIMM - NAS Upgrade

Our review of the 4GB D4NESO-2666-4G replacement module finds it best suited for Synology DS220+ and DS224+ owners who need an affordable, reliable memory bump for routine NAS tasks. It delivers a clear practical benefit: a 4GB 260-pin DDR4-2666 SODIMM operating at 1.2 volts with CAS latency 19 that installs easily and restores or improves responsiveness for small home or office NAS setups. For anyone focused on cost-effective upgrades and straightforward compatibility, this module makes the upgrade process painless.

Key Features

• Synology compatibility: Built to match the D4NESO-2666-4G specification so it fits Synology DS220+ and DS224+ slots without hassle.
• DDR4-2666 performance: 2666MHz speed helps reduce access times for files and small applications compared with lower-speed modules.
• Power efficiency: Operates at 1.2 volts which keeps power draw low inside a compact NAS chassis.
• Reliable timings: CAS Latency 19 provides predictable memory timing for stable operation in everyday NAS workloads.
• Lifetime replacement warranty: Warranty coverage gives peace of mind for long-term use in an always-on storage device.
• Compact SODIMM form factor: The 260-pin SODIMM fits the small memory bays used in compact NAS units, simplifying installation.

Who It's For

The module is aimed at home users, small offices, and IT hobbyists running a Synology DS220+ or DS224+ who want a low-cost, compatible memory upgrade to improve responsiveness for file access, light media serving, and modest virtualization use. It is also a sensible spare part for system builders maintaining multiple compact NAS units.

It is not intended for heavy-duty enterprise clusters or servers that demand high-capacity or ECC memory, nor for users who require large RAM capacities for heavy virtualization, database hosting, or intensive multi-user workloads where 4GB would be insufficient.

Pros & Cons

Pros

• Compatibility with the Synology D4NESO-2666-4G spec makes installation straightforward for DS220+ and DS224+ owners.
• Good value for money when replacing a failed module or adding modest extra memory to a NAS.
• Low operating voltage and standard CAS Latency 19 provide stable, efficient operation in compact systems.

Cons

• Only 4GB capacity, which can be limiting for advanced multitasking or heavier NAS roles.

Specifications

Form factor	260-pin SODIMM
Capacity	4GB
Memory type	DDR4-2666 (PC4-21300)
Voltage	1.2 volts
CAS Latency	19
Compatible devices	Synology DS220+ and DS224+
Warranty	Lifetime replacement warranty

Our Verdict

The 4GB D4NESO-2666-4G replacement is a pragmatic choice for Synology DS220+ and DS224+ owners who need a reliable, low-cost memory module to restore or slightly improve NAS responsiveness. Its compatibility, standard DDR4-2666 speed, and lifetime replacement warranty make it a solid value for routine home and small office storage roles, though power users will want higher capacities.

Frequently Asked Questions

Will this module fit my Synology DS220+?
Yes, it is designed to match the D4NESO-2666-4G specification and fits the DS220+ memory slot.

Is the 4GB capacity enough for NAS use?
For basic file serving, backups, and light media streaming it is usually sufficient, but heavier multitasking or virtualization needs more RAM.

Does it come with warranty support?
Yes, the module includes a lifetime replacement warranty for peace of mind.