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Green rectangular circuit board with gold edge connector and black memory chips

OWC

OWC 4GB DDR4 2400 CL17 260-pin SODIMM QNAP RAM-4GDR4A0-SO-2400 RAM-4GDR4K1-SO-2400 laptop RAM

SKU CH-WM5W-JQTC3

4 GB DDR4 2400 CL17 SODIMM for laptops, NAS and all-in-one systems, backward compatible with 2133 MHz

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • Boosts multitasking with 4GB DDR4 2400MHz CL17 memory
  • Low 1.2V voltage cuts power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 260-pin SODIMM fits laptops, AIOs and NAS units
  • Backward compatible with 2133MHz and 2400MHz systems

4 GB DDR4 2400 SODIMM for QNAP NAS

This 4 GB DDR4 2400 CL17 module uses the 260-pin SO-DIMM form factor and runs at 1.2 V. It is built as a direct replacement for QNAP part numbers RAM-4GDR4A0-SO-2400 and RAM-4GDR4K1-SO-2400. The unbuffered, non-ECC design suits laptops, all-in-one PCs and compatible NAS units.

Check your system before ordering

Verify that your device accepts 260-pin DDR4 SO-DIMMs and supports 2400 MT/s or 2133 MT/s operation. The module is single-rank 1Rx8 with CL17 latency and has no heat spreader. Ensure the board does not require ECC or registered memory, as this stick provides neither.

Upgrade from 2133 MHz or lower capacity

The module is backward compatible with 2133 MHz slots, so it can replace slower DDR4 SO-DIMMs. Adding this 4 GB stick increases total memory for multitasking and larger workloads. Systems already running 2400 MHz CL17 non-ECC SODIMMs will see no speed gain, only a capacity increase.

How it compares

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

Price $26.99
Cheaper than about 78% 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 $6.75 per GB
Pricier than about 59% 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 number2S4D41R804 GB
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
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 the module come with any accessories or do I need to buy a screwdriver separately?

Only the 260-pin SODIMM stick is supplied; a small Phillips screwdriver is typically needed to open the laptop or NAS chassis.

Should I choose the 4 GB stick or look for an 8 GB version for my QNAP NAS?

This part is a single 4 GB module; if your NAS has two slots and supports 8 GB total, adding a second identical stick will double capacity.

Will the CL17 2400 MHz rating actually run at 2400 MHz in my older laptop that only supports 2133 MHz?

The module is backward compatible and will automatically down-clock to 2133 MHz while keeping CL17 timings.

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