Keep DVI sources and displays aligned with a 4x2 matrix switch designed for controlled AV distribution. The Black Box AC1125A lets you route any of four DVI inputs to either of two outputs, giving integrators the flexibility to support presentation spaces, training rooms, and command environments where source selection changes often. Audio switching is included, so video and sound stay matched through the same routing path. RS-232 control adds a clean integration point for automation systems and centralized room control, which matters when the switch is part of a larger managed AV stack. This model is a better fit than a basic switcher when you need matrix routing rather than simple one-to-one selection. It supports more complex signal paths, reduces manual re-cabling, and gives IT and AV teams tighter control over what appears on each display. For installations where uptime, predictability, and clean control matter, the AC1125A delivers the routing discipline expected in professional environments.