Tested, Open Box. The Wintec 16GB DDR4-2133 SO-DIMM memory module is a high-quality RAM designed for computers and laptops. With a total capacity of 16GB and a bus speed of DDR4-2133, this module provides fast and efficient performance for your system. The non-ECC feature ensures reliable memory operations, making it a reliable choice for your computing needs. The compact SO-DIMM form factor fits seamlessly into your device, offering a straightforward upgrade solution for enhancing your system's memory capacity.