Synology RAM DDR4-2666 Non-ECC SO-DIMM 4GB (D4NESO-2666-4G)

Four stars because of price, but other than that I have had no issues when using with DS220+. Rock solid

Worked as described in my DS220+. Nice to have the additional memory to run more VMs, containers, and full-text search. Went from the stock, soldered 2 GB to at total of 6 GB. I have a pair of 4 TB HDDs running in RAID 1 on this NAS.

Came super fast and it s exactly what was in the picture.

Works flawlessly with the DS 720+. The cost is high for RAM but using another unapproved modul will cause problems. For example; shut downs, data lose, clicking HDDs. Outright system crashes and random freezing.

Yep. Its fast.

I dont do gaming, so I dont have an opinion about that, but this installed easily and my software for my NAS tells me it is performing as advertised. Synology OEM parts are a bit more expensive, but there dont seem to be any issues with them, whereas some other reviewers found some issues with parts from other providers.

Easy to install. Works great in my Synology NAS.

It works, I now have 4 more GB of RAM in the NAS.

Used on my Synology DS220+. Install was a breeze, start up and NAS recognized with no issues. A little pricey but worth it.

I already purchase one years ago for my DS220 and this one its just as flawless. Will run non stop for years. In addition, you ensure that warranty and support is available since its approved by Synology (of course)