You've got one DVI output and two screens that need to show the same content. Or you're running a presentation room and both the projector and the wall monitor need signal, audio included.
The ATEN 2-Port DVI Dual Link/Audio Splitter takes one source and mirrors it to two DVI-compatible displays simultaneously. Up to 2560×1600 at 60Hz, including true 2K resolution (2048×2048) at 60Hz. Audio passes through on both outputs, so the room hears what the screen shows.
RS-232 chain control lets you send commands to cascaded devices over the DVI cable itself. Handy when you've got a stack of AV gear in a rack and don't want a separate control run for each one.
Project-grade. No software. No drivers. Plug in, split, done
| brand | ATEN |
| model | VS172-AT-U |
| type | 2-Port DVI Dual Link/Audio Splitter |
| max_resolution | 2560x1600@60Hz |
| 2k_support | 2048x2048@60Hz |
| audio | Enabled (both outputs) |
| control | RS-232 chain control |
| input | DVI Dual Link |
| outputs | 2× DVI |