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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 2U6D42R816GB 16GB DDR4 2666 CL19 1.2V 288-Pin UDIMM memory upgrade

SKU CH-XH89-NX29T

16 GB DDR4 2666 CL19 UDIMM upgrade for HP ProDesk 400 G5, 405 G4 and 600 G4 systems

  • Capacity16GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16GB capacity lets you run more apps simultaneously
  • DDR4 2666 CL19 speed matches system requirements
  • 2V low voltage reduces power draw
  • 288-pin UDIMM fits HP ProDesk 400 G5 and 600 G4 models
  • JEDEC compliant for reliable operation

16 GB DDR4 2666 UDIMM for HP ProDesk

This 16 GB DDR4 2666 CL19 UDIMM is a non-ECC, unbuffered memory module built to JEDEC standard specifications. It is designed as a direct upgrade for the listed HP ProDesk small-form-factor and tower systems.

Fits HP ProDesk 400 G5, 405 G4 and 600 G4

The module suits owners of those exact ProDesk models who need more capacity for multitasking or larger datasets. Builders with platforms that require ECC, registered DIMMs, SODIMM form factors or a different DDR generation should select a different part.

288-pin DDR4 2666 interface decides compatibility

The 288-pin DDR4 interface running at 2666 MT/s (PC4-21300) with CL19 latency and 1.2 V operation is the single specification that determines whether this module will work in a given system.

Highlights

  • 16GB capacity lets you run more apps simultaneously
  • DDR4 2666 CL19 speed matches system requirements
  • 2V low voltage reduces power draw
  • 288-pin UDIMM fits HP ProDesk 400 G5 and 600 G4 models
  • JEDEC compliant for reliable operation

Specifications

BrandOWC
Part Number2U6D42R816GB
Capacity16GB
Type288-Pin DDR4 Non-ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemHP ProDesk 400 G5 SFF
HP ProDesk 400 G5 Tower
HP ProDesk 405 G4 SFF
HP ProDesk 600 G4 SFF
HP ProDesk 600 G4 Tower

Other versions of this model

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

Questions about this item

How much power does this 16GB DDR4 2666 CL19 1.2V module draw when the system runs all day?

The module operates at the standard DDR4 voltage of 1.2V, keeping power draw low during continuous use.

What must my HP ProDesk already have for this 288-pin UDIMM to work?

Your ProDesk 400 G5 SFF, 400 G5 Tower, 405 G4 SFF, 600 G4 SFF or 600 G4 Tower needs a free DDR4 UDIMM slot.

Will this CL19 2666MHz stick run stably alongside my existing 2133MHz or 2400MHz modules?

Yes, the spec notes backward compatibility with 2133MHz and 2400MHz; all modules will run at the lowest common speed.

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