A-Tech 4GB DDR4 2666MHz CL19 260-Pin SODIMM Dell AA086413 SNPKN2NMC/4G 1Rx16 Laptop RAM

Capacity and form factor

This 4 GB DDR4 SO-DIMM uses the 260-pin layout found in modern laptops, all-in-ones and compact notebooks. It runs at 2666 MHz with a CL19 latency and the standard 1.2 V operating voltage. The module is unbuffered and non-ECC, matching the requirements of most consumer mobile platforms.

Build fit and system impact

The stick occupies a single SODIMM slot and draws no extra power beyond the DDR4 baseline, leaving any second slot free for a matching upgrade. It requires a motherboard and CPU memory controller that support DDR4 2666 operation; systems locked to lower speeds will simply run the module at the highest compatible frequency. No additional cooling or firmware steps are needed.

Upgrade path and when it matters

This module replaces an existing 4 GB DDR4 stick or fills an empty slot to double usable memory in supported machines. The jump is worthwhile when the current configuration leaves headroom for multitasking, browser tabs or light content creation. It does not suit buyers who need higher capacity per slot, ECC error correction or speeds beyond 2666 MHz.