Synology 4GB DDR4 2666MHz ECC SO-DIMM NAS Memory D4ES01-4G RS1221 DS1821 DS1621+

US $9.99
ApproximatelyC $13.78
Condition:
Open box
THIS IS NEW and PULLED FROM A BRAND NEW NAS TO UPGRADE
2 available7 sold
Breathe easy. Returns accepted.
People are checking this out. 5 have added this to their watchlist.
Shipping:
US $5.99 (approx C $8.26) eBay SpeedPAK Standard.
Located in: shenzhen, China
This item includes applicable import fees—you won’t pay anything extra after checkout.
Delivery:
Estimated between Wed, Oct 1 and Tue, Oct 7 to 94104
Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will depend on shipping service selected and receipt of cleared paymentcleared payment - opens in a new window or tab. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Payments:
     Diners Club

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eBay item number:285887146720
Last updated on Aug 21, 2025 23:44:00 EDTView all revisionsView all revisions

Item specifics

Condition
Open box
An item in excellent, new condition with no wear. The item may be missing the original packaging or protective wrapping, or may be in the original packaging but not sealed. The item includes original accessories. The item may be a factory second. See the seller's listing for full details and description. See all condition definitionsopens in a new window or tab
Seller Notes
“THIS IS NEW and PULLED FROM A BRAND NEW NAS TO UPGRADE”
Brand
Synology
Form Factor
SO-DIMM
Type
D4ES01-4G
Number of Modules
1
Total Capacity
4 GB
Capacity per Module
4 GB
MPN
D4ES01-4G
Bus Speed
PC4-21300 (DDR4-2666)
Memory Features
ECC Memory
Category

Item description from the seller

About this seller

Ram Focus

100% positive feedback582 items sold

Joined Sep 2020
Usually responds within 24 hours
Alexin Tech is an online e-commerce driven business, we offer a large inventory of high quality flash memory products, memory accessories, and peripherals.We offer quality products at competitive ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.6
Shipping speed
5.0
Communication
5.0

Seller feedback (108)

All ratings
Positive
Neutral
Negative
  • 5***o (2)- Feedback left by buyer.
    Past month
    Verified purchase
    Es una excelente compra, el vendedor estuvo al pendiente, fue amable. El producto llegó en buenas condiciones y en buen estado, el producto vino sellado y en su caja protectora, el valor del producto es aceptable. La calidad del producto es 100. El aspecto del producto es de buen estado.
  • s***5 (328)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Everything was fine and the seller walked the extra mile to ensure that the module will work on my laptop! One problem though, not related to the seller or the item. The postal service used (ELTA, Greek post office) is the absolutely worst post service in Greece, really slow and non-customer friendly. Seller could not have known that, I just mention it.
  • l***l (19)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    16GB module was installed and is fully recognized. I appreciate the seller's follow-up, asking for the laptop model number and the CPU to verify that the memory would be compatible. Referencing Intel's information shows that the computer would only support 8GB or memory. The seller honored my request to ship the 16GB module despite the available information.
See all feedback

Product ratings and reviews

5.0
1 product ratings
  • 1 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Good value

Fast

Performs well

Most relevant reviews

  • Great!

    Took my Synology from 4gb to 8, major performance boost!

    Verified purchase: YesCondition: Pre-OwnedSold by: nasbuilders