The HX421S13IB/16 is a high-performance DDR4 SODIMM memory module from Kingston's HyperX Impact series, designed for users who demand speed and reliability. It operates at a frequency of 2133MHz (PC4-17000) and comes in a compact 260-pin SODIMM form factor, making it an ideal upgrade for laptops, small form factor (SFF) PCs, and mini-PCs. This module offers a total capacity of 16GB, configured as a dual-ranked setup with 2Gx64 architecture, providing a substantial performance boost for memory-intensive applications and multitasking. The HyperX Impact series is known for its low voltage requirements, which not only helps in reducing heat and power consumption but also enhances the overall system stability. This module is plug-and-play, enabling automatic overclocking to the highest frequency published, with no need to adjust BIOS settings. Its slim and sleek design does not compromise on quality, as it comes with a manufacturer's warranty and free technical support, ensuring peace of mind for the end-user.