

🚀 Power your NAS like a pro — speed, stability, and support in one sleek stick!
The A-Tech 16GB DDR4 PC4-21300 RAM module is a high-performance, ECC unbuffered UDIMM designed as a direct replacement for Synology D4EC-2666-16G memory. Operating at 2666MHz with a 1.2V low voltage profile, it supports a broad range of Synology NAS and SAN server models, ensuring enhanced multitasking and system responsiveness. Rigorously tested and backed by a limited lifetime warranty plus US-based technical support, this memory upgrade guarantees reliable, long-term performance for professional-grade storage solutions.
| ASIN | B08VWJ4FVQ |
| Best Sellers Rank | #56,264 in Computers ( See Top 100 in Computers ) #423 in Computer Memory |
| Item model number | D4EC-2666-16G-ATC |
| Manufacturer | A-Tech |
| Product Dimensions | 13.34 x 3.12 x 0.38 cm; 30 g |
A**O
Instalación fácil y sin error. Funcionando al 100
G**Z
Totalmente compatible con el synology DS720+ sin problema, esperemos el rendimiento con el tiempo que pase la prueba de uso
A**E
It works with my Synology DS 1522+. Definitely cost saving vs getting from Synology brand. Worth every penny!
L**N
I went through an ordeal trying to install an incompatible RAM card into my Synology NAS, which I purchased from a local retailer. With no luck, I took my device apart and tried installing it into both RAM ports. I think it was the wrong frequency, so I had to return it. I plugged this one in, and it started working almost instantly—no more memory shortage issues. 100% would recommend. This one works great.
S**3
Size: DDR4 2666MHz 32GB Kit (2 x 16GB)Style: SODIMM ECC Unbuffered Huge difference and fully compatible with DS923+ Going to echo some others, as they stated it well and saves me time (thank you other reviewers) The performance improvement this ram brought to my NAS is also remarkable. With a total of 32GB installed, my DS923+ shows a significant boost in multitasking capabilities and faster data processing. Pull ALL your drives and keep them in order!! They have to be re-installed in the same order after RAM install. Seating them is really tricky to do without pulling out multiple drives and putting the machine on its side. Bought two A-Tech 16GB ECC ram sticks for my DS923+ NAS system. Have to say that I am pleasantly surprised by their performance. These ram sticks exceeded my expectations. I installed them in my DS923+ without any compatibility issues, making it a user-friendly and seamless experience. The absence of warning errors about unofficial ram further confirms their excellent compatibility with the DS923+ system. Also, these are a steal for more than half the price of Synology-branded ram. BUY ECC if you want to protect your data bits on the way into your array and avoid "bit errors" Tips/Recommendation - I also recommend turning off "Memory Compression" (On DSM 7.2, it would be under hardware & power) if you have more than 8GB of ram, as it can further optimize the performance of DSM, allowing your DS923+ to fully utilize the increased memory capacity. I pulled the DS923+ OEM 4GB and used it elsewhere, then installed the 2X16GB ECC units. TL; DR, I highly recommend these 16GB sticks for the DS923+ NAS system, as they deliver a reliable and efficient upgrade with plug-and-play functionality, a lifetime warranty, seamless compatibility, and a huge noticeable performance boost (Disable Memory Compression)
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