A-Tech 4GB DDR4 3200 SODIMM CL22 1.2V HMAG56EXNSA051N

4GB DDR4 3200 SODIMM for Laptop Upgrade

This 4GB DDR4 3200 SODIMM module is built as a direct replacement for the Hynix HMAG56EXNSA051N part. It suits owners of compatible laptops, notebooks or all-in-one systems who need a straightforward capacity increase. The stick runs at the standard 1.20V DDR4 voltage and carries a CL22 latency rating. Systems that require ECC or registered memory cannot use this unbuffered non-ECC module.

Tool-free slot insertion with keyed notch

Installation consists of opening the memory compartment, aligning the 260-pin edge connector with the keyed SO-DIMM slot and pressing until the retention clips engage. No drivers or firmware updates are required because the JEDEC profile loads automatically at boot. The most common issue is a seating problem: if the module is not fully locked the system will not POST, so verify both clips have clicked. Buyers must confirm their platform supports DDR4 SO-DIMM before ordering.

Steady 3200 MT/s throughput under sustained load

Once trained the module maintains its rated 3200 MT/s data rate during extended multitasking or background workloads without down-clocking. The 1.20V operation keeps thermal output low inside confined laptop chassis, so sustained performance remains consistent. Latency stays at CL22 throughout long sessions because the JEDEC timings are fixed and do not rely on XMP profiles that could destabilise under heat. Non-ECC operation means single-bit errors are not corrected, which is normal for consumer laptop memory.