A-Tech 4GB DDR4 2666MHz CL19 260-Pin SODIMM Micron MTA4ATF51264HZ-2G6E1 Compatible Laptop RAM

4GB DDR4 Laptop Memory Upgrade

This A-Tech module provides 4GB of DDR4 2666MHz memory in a 260-pin SODIMM form factor. It operates at 1.20V with CL19 latency and is unbuffered non-ECC. The module is designed as a compatible replacement for Micron part numbers MTA4ATF51264HZ-2G6E1, MTA4ATF51264HZ-2G6E3, and MTA4ATF5126HZ-2G6E1. It suits laptops, notebooks, and all-in-one systems requiring a standard DDR4 SO-DIMM upgrade.

Who Should Buy This Module

This single 4GB stick suits users replacing a failed module or adding capacity to a laptop with an available SODIMM slot supporting DDR4 2666MHz. Builders needing ECC error correction, registered buffering, or speeds other than 2666MHz should look elsewhere. Systems limited to lower DDR4 speeds or requiring 1.35V low-voltage modules cannot use this part. Buyers wanting higher capacities per slot must choose a different module.

CL19 Latency At 2666MHz Speed

The module runs at DDR4 2666MHz (PC4-21300) with a CAS latency of CL19. This timing is the key specification determining compatibility with your system's memory controller. Verify your laptop supports DDR4 2666MHz CL19 operation before purchasing, as mismatched speed or latency can prevent booting or cause instability. The 1Rx16 organisation is fixed for this 4GB density.