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16GB DDR4-2666 PC4-21300 ECC SODIMM Compatible with Synology D4ECSO-2666-16G Memory Upgrade Module by NEMIX RAM

  • Based on 42 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Nov 4
Order within 23 hours and 34 minutes
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Size: 16 GB


Features

  • Capacity 16GB, Speed DDR4-2666 Mhz, PC4-21300, ECC SODIMM, Rank 2Rx8, Compatible with Synology Part D4ECSO-2666-16G,
  • Compatible with the following Synology machines: RackStation RS1221+/RS1221RP+; DS3617xsII; DS1621xs+; DS1621+; DS1821+; DS2419+II. Made from the highest quality components, NEMIX RAM products are not only reliable and durable but are specifically engineered for performance.
  • A memory upgrade is one of the most affordable and simple ways to increase system performance. The amount of memory in your system plays a critical role in the speed of your machine. Improve system responsiveness, and increase your system's ability to handle larger workloads, access data faster by upgrading your internal memory.
  • Install Easily, no computer skills required, with just a screwdriver, the owners manual, and a few minutes, you can install memory no computer skills necessary.
  • Here at NEMIX we pride ourselves on all our products and provide a Lifetime Replacement Warranty for all orders along with customer service support before, during, & after your purchase.

RAM: ‎16 GB DDR4 2666


Brand: ‎NEMIX RAM


Item Weight: ‎0.845 ounces


Package Dimensions: ‎7.01 x 4.76 x 0.51 inches


Manufacturer: ‎NEMIX RAM


Date First Available: ‎September 13, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Work perfect with my synology DS1522+
Size: 32 GB (2x16GB) Kit
Add 32G Ram to the new DS1522+ and no warning massage appear. Ram test also passed. I am satisfy with the stability and performance of virtual machine after Ram increase.
Reviewed in the United States 🇺🇸 on October 23, 2022 by takara8850

  • No fuss no mas! The kit passed the 6-hour Synology memory test three times on a DS1821+ NAS.
Size: 32 GB (2x16GB) Kit
They just work...removed the default 4GB ram and installed this 32GB kit in my Synology DS1821+. Took less than 5 minutes and DSM 7 identified the 32G ram right away. I'm now performing a memory test from the Synology Assistant program that'll take a couple hours. I do not anticipate any problems based on past reviews and answered questions. EDIT: I performed three memory tests on this ram per Synology's recommendation. Each test took about 6.0 - 6.5 hours and all tests passed flawlessly. In all three tests, it seemed that at the 75% mark, the test slowed down significantly, and it seemed as though the NAS was frozen ... for a really long while. Be patient, it's not frozen. It just takes its time to do its tests. Just set it up and go do something for 6 hours and all will be good afterwards. ... show more
Reviewed in the United States 🇺🇸 on July 30, 2022 by David Musoke

  • Works flawlessly
Size: 32 GB (2x16GB) Kit
Works perfectly in my Synology NAS. Upgraded the stock RAM and didn’t get any error codes or compatibility issues with the synology set up. Much improved performance and very easy and quick install. All in the upgrade takes maybe 5-7 including shutting down and rebooting the NAS.
Reviewed in the United States 🇺🇸 on July 22, 2022 by Dave S

  • Works Perfectly on my Synology DS1621+
Size: 32 GB (2x16GB) Kit
I bought this to expand the memory on my Synology DS1621+ from 8 GB to 32GB. It works perfectly. No issues. Recognized perfectly as 32 GB of installed RAM.
Reviewed in the United States 🇺🇸 on July 17, 2022 by Richard Z.

  • Passed Synology Memory test
Size: 16 GB
Good value for the money - Will have to see performance as time goes by... Passed Synology Memory test after install (16GB+org 4GB) - results below - (SSH - Putty - use the command below to see your memtest results) admin@NASMV:/$ sudo cat /var/log/messages | grep Memtest Password: 2022-02-27T22: 38 : 52-05 : 00 NASMV findhostd[16713]: ucil_fhost.c:1207 Memtest; passed 2022-02-27T22: 38 : 52-05 : 00 NASMV findhosrd[16804]: ucil_fhost.c:1207 Memtest; passed 2022-02-27T22: 38 : 52-05 : 00 NASMV findhostd[16732]: ucil_fhost.c:1207 Memtest; passed 2022-02-28T16: 59 : 05-05 : 00 NASMV findhostd[13678]: útil_fhost.c:1207 Memtest; passed ... show more
Reviewed in the United States 🇺🇸 on February 28, 2022 by NobleMD

  • fit seamlessly into my DS1621+
Size: 16 GB
Compared to the Crucial or Synology variants, this stick was much more wallet-friendly. Received today, put in the unit in the spare memory slot (along side my default Synology 4GB stick) and fired right up with no issues at all. Confirmed 20GB showing in the info center and can confirm partitioning VMs to validate memory is usable. So far, no issues at all. if changes, i'll update. ... show more
Reviewed in the United States 🇺🇸 on March 4, 2022 by Pop ina Bottle

  • Worked on installation on 1621+
Size: 16 GB
I was skeptical, but I swapped it out, and it is working no problem. I have a second stick on the way, and will update if there are any problems. This is a very easy upgrade. I have Nemix on some of my work AMD builds that can utilize ECC, and they are very stable, I hope the same holds true for the Synology ram. ... show more
Reviewed in the United States 🇺🇸 on February 23, 2022 by Andy

  • Good Value
Size: 16 GB
Good Value, Worked on Synology RS1221+, Passed Synology Memory Test
Reviewed in the United States 🇺🇸 on May 5, 2022 by Chris

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