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How to switch between inputs on your CommBox Classic S4

Need to show your laptop, a document camera or an Apple TV on your CommBox? Learn how to easily switch between connected input sources like HDMI, USB-C, and the built-in PC.

Applies To

Applies to: Classic S4, Classic S4+

Step-by-Step Instructions

Method 1: Using the Launcher

  1. Open the side menu
    Tap the handle on the left or right edge of the screen to open the side menu.

Classic S4 Launcher

  1. Tap the Launcher icon
    This opens a view of all your connected devices and apps.

  2. Select your input
    You’ll see a list of connected input sources like:

    • HDMI 1 / HDMI 2 / HDMI 3

    • USB-C

    • VGA

    • Slot-In PC (OPS)

💡 The Launcher will only show inputs that are actively connected.

Method 2: Using Device Settings

  1. Swipe up from the bottom
  2. Go to Inputs Tab
  3. Select Input

Classic S4 Input Switcher

Method 3: Using the Remote Control

  1. Press the Input button on the remote control.

  2. Use the arrow keys to scroll through available inputs.

  3. Press OK to switch to the selected source.

Input Names & Labels

To make things easier to manage:

  • Go to Settings > Input & Output > Input Naming Settings

  • Toggle on Input Alias

  • Rename inputs to something more meaningful like “Apple TV”, “Classroom PC”, or “Document Camera”

🎯 This makes switching between sources quicker—especially in busy classrooms or shared spaces.

Troubleshooting / What to Do If It Doesn’t Work

  • No signal?

    • Make sure the connected device is powered on and not in sleep mode.

    • Try another cable or port if needed.

  • Wrong input showing?

    • Use the Launcher or remote to manually switch to the correct one.

    • You can also disable unused ports in Settings to reduce confusion.