This is a 8GB DDR3 compact SO-DIMM memory module from Arktek, running at 1600MHz. As a compact SO-DIMM, it installs into a laptop, notebook, mini-PC, or other small-form-factor system with SO-DIMM memory slots rather than a full-size desktop. Matching capacity, speed, and form factor exactly to the target system (and, for a multi-module upgrade, matching modules to each other) is what lets DDR3 memory run reliably at its full rated speed rather than falling back to a slower, auto-negotiated speed or failing to POST altogether. The catalog's "PC-1600" designation is the JEDEC PC-rating shorthand for the DDR3-1600 speed grade. As a notebook-format module, this suits an older laptop still running DDR3 memory, offering a straightforward capacity upgrade or replacement stick for a system that predates DDR4-generation platforms. As with every component in this category, it is intended for builders and IT resellers who need an exact, verifiable spec sheet before committing to a build or a client quote, not just a brand name.