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OWC

OWC 4GB DDR4 2133 CL15 260-pin SODIMM laptop RAM

SKU CH-21QF-BW5PW

A 4 GB DDR4 2133 MHz SODIMM module for laptops, mini desktops and NAS systems

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • Boosts system responsiveness with 4GB DDR4 2133 CL15 memory
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Low 1.2V voltage reduces power draw in laptops
  • 260-pin SODIMM fits laptops, all-in-ones and NAS systems
  • Tested to meet or exceed OEM specifications for reliability

OWC 4GB DDR4 2133 SODIMM

This OWC module is a 4 GB DDR4 laptop memory upgrade rated at 2133 MT/s with CL15 latency. It uses the standard 260-pin SO-DIMM form factor and runs at 1.2 V. The part is unbuffered, non-ECC and has no heat spreader. It is designed as a direct replacement for NCR part numbers 4970509803 and 7607K134.

Suits DDR4 SO-DIMM slots only

The stick fits laptops, all-in-one systems, mini desktops, micro servers and NAS units that take DDR4 SO-DIMM memory. It will not work in systems that require registered or ECC modules, nor in platforms limited to lower-density chips. Buyers needing more than 4 GB per slot should look elsewhere.

Speed decides compatibility

The module operates at DDR4 2133 (PC4-17000) with a CAS latency of 15. If the target system requires a different data rate or tighter timings, this part will not be the correct match.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $30.99
Cheaper than about 73% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $7.75 per GB
Pricier than about 68% of the 1,886 comparable items (median $5.94 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2S1D41R804 GB
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

Does my laptop need a 260-pin DDR4 SODIMM slot to use this 4GB module?

Yes, the module fits a standard 260-pin DDR4 SO-DIMM socket found in laptops, notebooks, mini desktops, micro servers, NAS systems and POS terminals.

Will this CL15 2133MHz stick run with my existing DDR4 2133 CL15 memory?

It uses the same DDR4 2133 PC4-17000 CL15 1.2V specification, so it will operate alongside identical modules at the rated speed and latency.

How can I confirm the 4GB module is recognised at 2133MHz after installation?

Check the BIOS or a system-information tool; it should report 4GB capacity, DDR4 technology, 2133MHz speed and CL15 timings.

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