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Green printed circuit board with gold edge contacts and black memory chips

OWC

OWC WDBLSS0040BBK-WESN 2GB DDR3 1600 SODIMM NAS

SKU CH-1AZX-YRZ25 MPN WDBLSS0040BBK-WESN

A 2GB DDR3 1600 SODIMM module for upgrading compatible Synology NAS units

  • Capacity2GB
  • Type204-Pin DDR3 Non-ECC SODIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCNo

Capacity 2GB

  • 2GB
  • 4GB

Struck-through versions exist but are not stocked here.

  • 2GB capacity expands NAS multitasking headroom
  • DDR3 1600 PC3-12800 CL11 matches factory speed
  • 5V 204-pin SODIMM fits listed Synology bays
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Single 1Rx8 module simplifies DIY installation

DDR3 SODIMM for Synology NAS

This 2GB DDR3 1600 module upgrades compatible Synology NAS units including the DS1515+, DS1517+, DS1815+, DS1817 and RS815+. It uses a 204-pin SO-DIMM form factor with CL11 latency and 1.5V operation.

Fits listed NAS bays directly

The unbuffered non-ECC stick installs in the memory slot of the supported Synology models without extra brackets or adapters. Adding capacity frees the system to hold more concurrent tasks and larger file caches.

Steady throughput at JEDEC spec

Rated at PC3-12800 with CL11 timing, the module maintains its specified bandwidth during extended file transfers or multi-user access. Buyers needing ECC protection or capacities above 2GB per slot cannot use this part.

Highlights

  • 2GB capacity expands NAS multitasking headroom
  • DDR3 1600 PC3-12800 CL11 matches factory speed
  • 5V 204-pin SODIMM fits listed Synology bays
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Single 1Rx8 module simplifies DIY installation

Specifications

BrandOWC
Part Number1S6D31R802GB
Capacity2GB
Type204-Pin DDR3 Non-ECC SODIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology NAS DS1515+
Synology NAS DS1517+
Synology NAS DS1815+
Synology NAS DS1817
Synology NAS RS815+

Questions about this item

Will the CL11 latency bottleneck sustained throughput on a DS1817?

CL11 is the rated CAS latency for this DDR3 1600 module; it runs at the JEDEC-standard timing the NAS expects, so latency stays within spec during continuous workloads.

Does the 1.5 V module run hotter or louder than lower-voltage sticks in a DS1515+?

The SODIMM draws 1.5 V and has no heat spreader; it adds negligible heat and makes no noise, leaving the NAS fan profile unchanged.

Which Synology NAS models must I already own for this 204-pin SODIMM to work?

Compatible systems are DS1515+, DS1517+, DS1815+, DS1817 and RS815+.

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