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

OWC

OWC 16GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM HP Pro 300 G6 G3 G2

SKU CH-F8QK-MMSSD

16GB DDR4 2666MHz CL19 1.2V UDIMM upgrades HP Pro 300 G6 G3 G2 desktops

  • Capacity16GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16GB DDR4 boosts multitasking on HP Pro 300 desktops
  • 2666MHz CL19 speed matches factory specifications exactly
  • 2V low voltage reduces power draw and heat
  • 288-pin UDIMM fits G6, G3 and G2 models directly
  • JEDEC compliant and ROHS certified for warranty-safe upgrade

HP Pro 300 G6 G3 G2 Upgrade

This 16GB DDR4 2666MHz CL19 UDIMM is built for HP Desktop Pro 300 G6, A 300 G3, A G2 and A G3 systems. It targets owners of those specific models who need more memory for everyday multitasking and larger workloads. The module runs at 1.2V and fits the standard 288-pin desktop slot.

Replaces Slower DDR4 Modules

The stick operates at PC4-21300 2666MHz and is backward compatible with 2133MHz and 2400MHz slots. The jump is worth it when your current memory runs at those lower speeds or when empty slots limit total capacity. It will not benefit systems that require ECC or registered memory.

Simple DIY Installation

Installation is a straightforward DIY task: power off, open the case, align the notch and press until the clips click. No heat spreader means a low profile that clears most CPU coolers. The usual issue is mixing speeds; the system will downclock all modules to the slowest installed speed.

Highlights

  • 16GB DDR4 boosts multitasking on HP Pro 300 desktops
  • 2666MHz CL19 speed matches factory specifications exactly
  • 2V low voltage reduces power draw and heat
  • 288-pin UDIMM fits G6, G3 and G2 models directly
  • JEDEC compliant and ROHS certified for warranty-safe upgrade

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 Desktop Pro 300 G6
HP Desktop Pro A 300 G3
HP Desktop Pro A G2
HP Desktop Pro A G3

Other versions of this model

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

Questions about this item

Does the 288-pin DDR4 UDIMM fit the HP Pro 300 G6 motherboard slots?

Yes, the 288-pin DDR4 UDIMM matches the standard desktop DIMM slots used in the HP Pro 300 G6, A 300 G3, A G2 and A G3 systems listed for this module.

What is the correct way to seat the module, and what step do people often miss?

Align the notch on the module with the key in the slot, press down firmly until both retention clips click into place, and verify the clips are fully locked — the step most often missed is not pressing hard enough to engage both clips.

Will the 16 GB 2666 MHz CL19 kit need any firmware updates or battery replacements over time?

No firmware updates or battery replacements are required; the module is a passive DRAM component that operates at 1.2 V and has no serviceable parts.

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