Skip to main content
Timetec DDR3-1866L 4GB Replacement for Synology D3NS1866L-4G Non-ECC Unbuffered SODIMM DDR3L 1866Mhz PC3L-14900 1.35V Memory RAM (Compatible for DS620slim, DS218+, DS718+, DS918+, DS418play)
Timetec

Timetec DDR3-1866L 4GB Replacement

Status: Timetec DDR3-1866L 4GB Replacement for Synology… (4GB DDR3 SODIMM kit): Unavailable on Amazon as of . SpecPicks has no in-stock 4GB DDR3 SODIMM kit on file; an Amazon search for "4GB DDR3 SODIMM kit" lists current offers with the same specs. eBay sellers may still list this model new or used.

Search Amazon for a 4GB DDR3 SODIMM kit → 🛒 Search eBay for this model

Bottom line: The Timetec DDR3-1866L 4GB Replacement: Drop-in swap for Synology's own D3NS1866L-4G module; main trade-off: only 4GB per stick, tops out low for busy NAS setups.

Unavailable on Amazon as of

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Search Amazon for an in-stock 4GB DDR3 SODIMM kit → Original listing (currently unavailable) → Compare to similar memory (ram)

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Drop-in swap for Synology's own D3NS1866L-4G module
  • ✓ Fits DS620slim, DS918+, DS718+, DS418play, DS218+ NAS units
  • ✓ Low-voltage 1.35V DDR3L runs cooler in always-on NAS boxes
  • ✓ Full DDR3-1866 PC3L-14900 speed, CL13 timing

Cons

  • ✗ Only 4GB per stick, tops out low for busy NAS setups
  • ✗ DDR3L is dated; no reuse in modern DDR4/DDR5 systems
  • ✗ Non-ECC, so no error correction for critical data
  • ✗ Single-rank 1Rx8, narrow compatibility outside listed models

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored Timetec DDR3-1866L 4GB Replacement using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. Timetec's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Replacement for an original Synology D3NS1866L-4G module
  • Compatible for Synology DiskStation 20 series:DS620slim
  • Compatible for Synology DiskStation 18 series: DS918+, DS718+, DS418play, DS218+
  • DDR3L 1866MHz PC3L-14900 204-Pin Unbuffered Non ECC 1.35V CL13 Single Rank 1Rx8 based 512x8 Module Size: 4GB Package: 1x4GB
  • Guaranteed – Lifetime warranty from Purchase Date Free technical support

Full Specifications

BrandTimetec
Weight4g
Voltage1.35 volts
RAM Size16 GB
Model NameD3NS1866L-4G
Unit Count1 Count
Form FactorSO-DIMM
Memory Speed2666 MHz
Model Number7
Number of Pins204
Mfr Part Number7
Memory GenerationDDR3L
Compatible DevicesLaptop, Server
Data Transfer Rate2100 megabytes_per_second
Memory Form FactorSODIMM
Additional FeaturesDDR4
Computer Memory Size16 GB
Warranty DescriptionLifetime
RAM Memory TechnologyDDR3L
Column Address Strobe LatencyCL19
Full listing titleTimetec DDR3-1866L 4GB Replacement for Synology D3NS1866L-4G Non-ECC Unbuffered SODIMM DDR3L 1866Mhz PC3L-14900 1.35V Memory RAM (Compatible for DS620slim, DS218+, DS718+, DS918+, DS418play)

Ready to buy?

Timetec DDR3-1866L 4GB Replacement for Synology D3NS1866L-4G Non-ECC Unbuffered SODIMM DDR3L 1866Mhz PC3L-14900 1.35V Memory RAM (Compatible for DS620slim, DS218+, DS718+, DS918+, DS418play) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

Related Memory (RAM)

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
Timetec DDR3-1866L 4GB Replacement for Synology D3NS1866L-4G Non-ECC Unbuffered SODIMM DDR3L 1866Mhz PC3L-14900 1.35V Memory RAM (Compatible for DS620slim, DS218+, DS718+, DS918+, DS418play)
View on Amazon →