This document is the user manual for the ATEN VS481A HDMI switch
The VS481 A HDMI Switch lets you connect up to four HDMI sources to a single HDMI display and switch between them using the front‑panel buttons or the IR remote. It includes a bi‑directional RS‑232 port for integration with controllers, PCs, or home‑automation systems.
The manual covers package contents, installation steps, remote control functions, RS‑232 command set, power‑on procedures, and detailed technical specifications such as video resolutions, power consumption, and physical dimensions.
| HDMI Input Connectors | 4 x HDMI Type A Female (Black) |
|---|---|
| HDMI Output Connector | 1 x HDMI Type A Female (Black) |
| RS‑232 Port | 1 x DB‑9 Female (Black) |
| Power Supply | DC 5.3 V, 2.4 W |
| Operating Temperature | 0 °C to 50 °C |
| Dimensions (L × W × H) | 20.00 mm × 8.00 mm × 2.50 mm |
| Weight | 0.47 kg |
| Supported Video Resolutions | HDTV 480p, 720p, 1080i, 1080p (1920×1080); VGA, SVGA, SXGA, UXGA (1600×1200); WUXGA (1920×1200) |
The VS481 A provides four HDMI Type A input connectors.
Turn off the attached devices, unplug the power adapter, wait 10 seconds, plug the adapter back in, then power on the VS481 A and the attached devices.
Port 1 is automatically selected when the unit powers up.
Set the serial port to 19200 baud, 8 data bits, no parity, 1 stop bit, and no flow control.