OWC 128GB (4x32GB) DDR4 2933MHz CL21 ECC SO-DIMM laptop RAM

128GB DDR4 ECC SO-DIMM Kit for Laptops and NAS

This kit provides 128GB of DDR4 ECC memory in four 32GB modules running at 2933MHz with CL21 latency. It is built for laptops, all-in-one PCs and NAS devices that accept 260-pin SO-DIMMs. The unbuffered design operates at the standard 1.2V JEDEC voltage. Buyers whose systems require registered or load-reduced DIMMs cannot use this kit.

ECC Unbuffered Operation at 2933MHz

Each module delivers ECC error correction without registered buffering, a combination required by many micro-servers and NAS platforms. The rated speed is PC4-23400 2933MHz CL21, and the modules are backward compatible with 2666MHz, 2400MHz and 2133MHz buses. Systems that only support non-ECC memory or that mandate registered modules will not work with these sticks.

Four-Module Kit Enables Full Population

The package contains four identical 32GB sticks, allowing a four-slot system to reach the full 128GB capacity in a single purchase. No heat spreaders are included, so clearance inside compact chassis remains minimal. Users with only two SO-DIMM slots cannot install the full kit and would need a two-module alternative.