Extend wired connectivity where a full access layer switch is unnecessary. The Black Box LGB304A delivers four Gigabit RJ-45 ports in a compact unmanaged design, so teams can add network drops quickly without introducing configuration overhead. USB power makes it especially useful in locations where an AC adapter is inconvenient or where a low-profile deployment is preferred. This switch is built for straightforward edge expansion: connect upstream, attach devices, and keep traffic moving. It suits small office work areas, test benches, conference setups, and embedded environments that need dependable copper connectivity without VLAN planning, management access, or rack complexity. For procurement teams, the value is in reducing install time and avoiding the cost of features that a small deployment may never use. When the requirement is simple port expansion with minimal footprint, this model offers a clean answer. It is a practical choice for teams that want reliable Gigabit switching in a form factor that stays out of the way while supporting everyday network access.