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Green circuit board with black memory chips, gold edge connector, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM20487217000ECCSO 16GB DDR4 2133MHz ECC SODIMM memory upgrade

SKU CH-8AG8-Q4AG4

Adds 16 GB of DDR4-2133 ECC memory to a Synology DS1618+ for up to 32 GB total capacity

  • Capacity16GB
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Timing15-15-15
  • Voltage1.2V
  • ECC protection prevents data errors in critical workloads
  • 16 GB capacity expands DS1618+ to half its 32 GB maximum
  • 2133 MHz DDR4 speed matches system specification
  • CL15 timing and 1.2 V voltage ensure stable operation
  • 260-pin SODIMM form factor fits the Synology slot

16 GB ECC SODIMM for Synology DS1618+

This 16 GB DDR4 module adds error-correcting memory to the Synology DiskStation DS1618+. It targets NAS owners who need data integrity for file services, virtualization or backup workloads. The single stick fits one of the two available slots and raises total capacity toward the 32 GB maximum.

Unregistered 260-pin design with major-brand chips

The stick uses a standard 260-pin SO-DIMM form factor without a heat spreader, keeping the profile low for tight NAS bays. Unregistered ECC circuitry works directly with the DS1618+ memory controller, and the 1.2 V operating voltage matches the platform specification. Major-brand DRAM components are selected for stability under continuous operation.

Upgrade from 8 GB or 16 GB factory configurations

Many DS1618+ units ship with 8 GB or a single 16 GB module, leaving one slot empty. Adding this 16 GB stick doubles capacity to 32 GB when both slots are filled, which benefits Docker containers, VMs and large-volume deduplication. The jump is worthwhile when current memory usage regularly exceeds the installed amount during peak loads.

Highlights

  • ECC protection prevents data errors in critical workloads
  • 16 GB capacity expands DS1618+ to half its 32 GB maximum
  • 2133 MHz DDR4 speed matches system specification
  • CL15 timing and 1.2 V voltage ensure stable operation
  • 260-pin SODIMM form factor fits the Synology slot

Specifications

BrandComputer Memory Solutions
ModelCM20487217000ECCSO
Capacity16GB
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Timing15-15-15
Voltage1.2V
ECCYes
Buffered/RegisteredUnregistered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemSynology DiskStation DS1618+
Package Content1Memory Ram Stick

Questions about this item

What DDR4 speed and PC4 rating does this 260-pin SODIMM run at?

The module operates at 2133 MHz with a PC4 17000 data rate, matching the Synology DS1618+ specification.

How many 260-pin slots does the DS1618+ have, and what is the maximum capacity per slot?

The DS1618+ provides two SODIMM slots and supports up to 32 GB total, so each slot can accept a 16 GB stick like this one.

Does the ECC unregistered stick install the same way as non-ECC memory, and what mistake should I avoid?

Yes, it inserts into the 260-pin slot at an angle then clicks down; the common error is not pressing firmly until both side latches lock, leaving the module partially seated.

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