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Four green DDR3 ECC UDIMM modules, 240-pin, no heat spreaders

OWC

OWC 16GB (4x4GB) DDR3 1600 PC3-12800 CL11 2Rx8 240-pin 1.5V ECC Unbuffered UDIMM memory upgrade

SKU CH-T5HJ-4E9VH

A 16 GB kit of four 4 GB DDR3 1600 ECC unbuffered UDIMMs for ASUSTOR AS7009RDX and AS7012RDX NAS systems

  • Capacity16GB (4 x 4GB)
  • Type240-Pin DDR3 ECC UDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 16GB (4 x 4GB)

  • ECC protection guards data integrity on compatible ASUSTOR NAS
  • 16 GB kit expands multitasking headroom for demanding workloads
  • DDR3 1600 CL11 modules match factory speed and latency
  • JEDEC and RoHS compliance ensures warranty-safe installation
  • Four 4 GB unbuffered DIMMs populate all slots for balanced performance

Targeted upgrade kit

This OWC kit provides 16 GB of DDR3 memory in a matched set of four 4 GB modules. It is designed specifically for ASUSTOR AS7009RDX and AS7012RDX network-attached storage devices. The ECC unbuffered design supports data integrity in always-on environments.

JEDEC-standard build

Each 240-pin UDIMM operates at 1.5 V with a CAS latency of CL11 and a 2Rx8 rank configuration. The modules carry no heat spreaders, keeping the profile low for tight drive bays. Full JEDEC and RoHS compliance ensures a warranty-safe installation.

Verify slot count and firmware

Confirm your NAS has four free DIMM slots before ordering, as the kit requires all four for the rated capacity. Check the current firmware version on the ASUSTOR unit to ensure it recognises the full 16 GB configuration. This memory is not compatible with platforms that require registered or non-ECC DDR3 modules.

Highlights

  • ECC protection guards data integrity on compatible ASUSTOR NAS
  • 16 GB kit expands multitasking headroom for demanding workloads
  • DDR3 1600 CL11 modules match factory speed and latency
  • JEDEC and RoHS compliance ensures warranty-safe installation
  • Four 4 GB unbuffered DIMMs populate all slots for balanced performance

Specifications

BrandOWC
Part Number1E6D32R8016S
Capacity16GB (4 x 4GB)
Type240-Pin DDR3 ECC UDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemASUSTOR AS7009RDX
ASUSTOR AS7012RDX

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Questions about this item

What speed does the DDR3 PC3-12800 rating cap at in practice?

The modules run at 1600 MHz with CL11 timing, which is the standard data rate for the PC3-12800 specification.

What physical slot and module height do the 240-pin UDIMMs need?

Each 4 GB stick uses a standard 240-pin DDR3 DIMM form factor without a heat spreader, so it fits any desktop UDIMM slot with normal clearance.

How are the four modules installed in the ASUSTOR AS7009RDX or AS7012RDX, and what step is often missed?

Power down the NAS, open the chassis, insert all four UDIMMs into the available DDR3 slots until the retention clips click, then verify the full 16 GB is recognised in the system BIOS before closing the case.

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