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Synology

Synology RAM DDR3L-1866 SO-DIMM 4GB (D3NS1866L-4G)

    • Based on 349 reviews
Condition: New
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Availability: Only 6 left in stock, order soon!
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Arrives Friday, Nov 22
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Style: DDR3-SODIMM


Features

  • DDR3L-1866 SO-DIMM 4GB for Apollo Lake CPU
  • Applied Model: DS218+, DS718+, DS918+, DS418play
  • For expanding your Synology NAS server's memory capacity

Description

Synology RAM DDR3L-1866 SO-DIMM 4GB. Always select authentic Synology memory modules from local distributors for optimum compatibility and reliability. Installation of non-Synology memory modules can lead to system instability or boot failures. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.


Memory Speed: ‎1600 MHz


Brand: ‎Synology


Series: ‎D3NS1866L-4G


Item model number: ‎D3NS1866L-4G


Item Weight: ‎0.48 ounces


Product Dimensions: ‎1.8 x 3.75 x 0.3 inches


Item Dimensions LxWxH: ‎1.8 x 3.75 x 0.3 inches


Processor Count: ‎1


Computer Memory Type: ‎DDR3 SDRAM


Voltage: ‎1.35 Volts


Manufacturer: ‎Synology America Corp


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎September 16, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 22

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.

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Top Amazon Reviews

    • How much is your time and data worth?
Style: DDR3-SODIMM
Almost from the get-go, my Synology DS918+ was flaky, often locking up for no apparent reason. It finally got to the point where the storage pool crashed and no volumes were accessible. I opened up a support ticket and they requested I run several memory tests, each of which took a few hours. Finally, after a few anxious days, a support tech was able to SSH into the NAS and rebuild the array, thus saving all my data. The specific reason for the crash - the RAID superblock on all 4 disks was corrupt, most likely caused by the NAS getting locked and having to hard cycle it many times. The culprit? Non-Synology RAM. Trying to save a few bucks, I had purchased two Crucial 8GB SODIMM modules for use in the NAS. The memory tests revealed tons of memory-related issues. After replacing the two non-OEM RAM modules with the single one that came with the unit and rerunning the memory test three times, no errors were found. So, lesson learned. Is this Synology memory expensive? Yes. But, you get what you pay for. My trying to save a few bucks cost me several days of anxiety and several hours running memory tests and sitting in on the SSH session which LUCKILY restored my data. Also, the use of non-Synology RAM modules is NOT supported. The Synology tech was nice enough to help me out despite that. And, you void the NAS warranty if non-Synology RAM causes damage to the NAS motherboard, RAM slots, etc. ... show more
Reviewed in the United States 🇺🇸 on April 5, 2020 by J. Bonbright
    • Official RAM but way overpriced.
Style: DDR3-SODIMM
I admit, I was very hesitant buying this RAM because it's grossly overpriced. The only reason I did such is because I run a Synology NAS which is both my home/business NAS and this is the only RAM module that is officially supported. I didn't want any excuses from Synology if my NAS tanks, and I didn't want to take any chances because apparently some RAM modules will cause issues. Typically people buy Crucial RAM which seems to work well for this NAS with little to no issues, but I wanted to keep everything official. I'm running a DS218+ and installation was incredibly simple. I just had to shut down the NAS, pull out my drives to access the expansion slot, push in the module, lock it down, put my drives back in (make sure you put them back in the same drive bays they came out of), boot it back up and the RAM was recognized. Make sure you need to upgrade the RAM before doing such. If you're using your Synology as basic network storage then you probably don't need to upgrade. In my case I'm using it for network storage, source control, a media server, and more, so I was capping out on my RAM frequently. Post-installation I did notice quite a bit more breathing room which is nice. People seem to have great success with Crucial RAM so if you're running a personal NAS then I'd definitely go that route. If it's for business then maybe consider going with officially supported RAM but also you'll probably be just fine with something like Crucial. I happen to be hyper-paranoid so I went official. It's about 3X the cost and honestly it's not really worth the added cost, but at least there's a slight peace of mind knowing the RAM I'm using is official, but that peace of mind comes at a ridiculous cost so for most people it's probably not really worth it. ... show more
Reviewed in the United States 🇺🇸 on September 16, 2019 by Steven
    • Works
Style: DDR3-SODIMM
Expanded the synology easily and with little hassle.
Reviewed in the United States 🇺🇸 on January 14, 2022 by JZar
    • Excellent Product
Style: DDR3-SODIMM
Review Image by Henry G
Review Image by Henry G
Purchased this additional RAM for my Synology DS918+ and was extremely easy to install. The RAM itself, came very well package from Synology. Synology only allows the use of their own RAM on their products or you affect/void your warranty. So the purchase was a no brainer, because I did not want to affect my three year warranty that comes with the unit. The performance has been great and no issues noted in my Resources Monitor and System Health is Good. ... show more
Reviewed in the United States 🇺🇸 on July 29, 2019 by Henry G
    • Passed the smoke test, still an infant ... but looking fine.
Style: DDR3-SODIMM
Still waiting to get out of the infant-mortality stage. Module arrived, labeled as advertised (authentic Synology DDR3 memory), installed, passed the smoke test, and registers the correct increase in NAS memory to 8 GB in the DSM info panel. Looks like I got what bought and wanted.
Reviewed in the United States 🇺🇸 on September 22, 2020 by Donald G Kallgren
    • Great NAS RAM
Style: DDR3-SODIMM
Does what it is designed to do and was easy
Reviewed in the United States 🇺🇸 on February 26, 2021 by Amazon Customer
    • Does the job
Style: DDR3-SODIMM
Synology is working just fine after installing it. Extra RAM gives my NAS enough oomph that I can use docker and storage at the same time. It hasn't caused performance issue or critical failures. Not much else to say, it's RAM.
Reviewed in the United States 🇺🇸 on May 16, 2020 by NoFluxGiven
    • Worked fine
Style: DDR3-SODIMM
It fit right in and was recognized by the NAS. Had to shut it down and pull all the drives to install it. Slides in a memory slot. You can go to the Synology website to get instructions.
Reviewed in the United States 🇺🇸 on December 21, 2019 by Scott Bright

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