We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR4 RDIMM modules, 288-pin, no heat spreaders

OWC

OWC 128GB (4x32GB) DDR4 2133 ECC Registered RDIMM server RAM

SKU CH-V4YE-75954

128 GB DDR4 2133 ECC registered RDIMM kit (4 × 32 GB, CL15, 1.2 V) for compatible Synology NAS and servers

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity across four 32 GB modules
  • ECC registered design detects and corrects single-bit errors
  • DDR4 2133 MHz CL15 timing at 1.2 V operation
  • JEDEC-standard and RoHS-compliant for warranty-safe upgrades
  • Compatible with Synology FS3017, FS2017 and RS18017xs+ NAS systems

Server Memory Kit

This OWC kit supplies 128GB of DDR4 2133 ECC registered memory across four 32GB RDIMMs. It targets administrators upgrading Synology FS3017, FS2017 or RS18017xs+ NAS units and similar server or workstation platforms that require registered ECC modules.

Installation Notes

The 288-pin DIMMs seat in standard DDR4 RDIMM slots without tools, but the modules must not be mixed with unbuffered or load-reduced ECC memory. Systems that do not support registered ECC will not recognise the kit, so verify the platform manual before purchase.

Sustained Operation

Rated at 1.2V with CL15 timing, the modules meet JEDEC PC4-17000 specifications for continuous server workloads. Error-correcting code and registered buffering maintain data integrity during extended multi-threaded tasks such as virtualisation or large-volume file services.

Highlights

  • 128 GB total capacity across four 32 GB modules
  • ECC registered design detects and corrects single-bit errors
  • DDR4 2133 MHz CL15 timing at 1.2 V operation
  • JEDEC-standard and RoHS-compliant for warranty-safe upgrades
  • Compatible with Synology FS3017, FS2017 and RS18017xs+ NAS systems

Specifications

BrandOWC
Part Number2R1D42R4128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I verify the 128GB kit is running at DDR4 2133 CL15 with ECC registered after installation?

Check the BIOS or UEFI memory information screen; it should show 128GB total, 2133 MHz speed, CL15 latency, 1.2V voltage and ECC registered status for each of the four 32GB modules.

What comes in the box and what must be purchased separately?

The box contains four 32GB 288-pin DDR4 2133 ECC registered RDIMM modules (2Rx4, CL15, 1.2V); no additional parts or cables are required for installation in a compatible server or NAS.

Which capacity kit should I choose for a Synology FS3017, FS2017 or RS18017xs+?

This 128GB (4×32GB) kit matches the OEM RAMRG2133DDR4-32G specification and fills the four DIMM slots in those NAS models for the maximum supported capacity.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.