This document introduces the features and characteristics of ATEN VS-291/VS-491 2/4 Port Video Switch. This product is a controller that allows you to conveniently display the output images of two (VS-291) or four (VS-491) independent host systems on one monitor, thus eliminating the need to purchase a separate monitor for each host. For greater reliability and durability, this product uses electronic switching technology rather than mechanical switching technology.
The VS-291 (2‑port) and VS-491 (4‑port) video switches allow multiple computers to share a single monitor using electronic switching, saving space and power. The manual explains how to install the unit, connect video sources and displays, and operate the switch via front‑panel buttons and LED indicators.
It also includes product features, detailed specifications, packaging contents, warranty terms, and online support resources. Safety and electromagnetic compatibility guidelines are provided to ensure proper installation and avoid interference with other equipment. This manual is written in Chinese.