Split a single HDMI source to two displays without adding complexity to the signal chain. The StarTech ST122HD4KU is a 1x2 HDMI splitter built for straightforward duplication of 4K content at 30 Hz, making it a practical choice for presentation systems, retail signage, and small meeting spaces where one source must appear on two screens. Its power options add deployment flexibility. You can power it from a nearby USB port or use a power adapter, which helps when the installation needs to stay compact or when outlet placement is limited. That makes it easier to place near a source device, behind a display, or inside a small AV enclosure. Compared with basic consumer splitters, this model is aimed at environments where reliability and clean integration matter. It is a simple way to extend a source to a second display while keeping the setup tidy and predictable. For teams that need a small-format splitter with 4K support and flexible power, it delivers the right balance of capability and convenience.