--- title: USB Device Mode description: Learn how to configure USB Device Mode on your Catchbox Plus Hub to choose between Speakerphone (two-way audio) or Microphone (one-way audio) for your computer connection. --- [Skip to content](https://help.catchbox.com/knowledge/usb-device-mode#main-content) - [Catchbox Plus](https://catchbox.com/plus-system) - [Case studies](https://catchbox.com/case-study/) - [Book a demo](https://explore.catchbox.com/book-demo?hsCtaTracking=26c83435-1828-4cad-b17a-14b537503736%7C17332728-d507-4382-827d-62d2279a4c0e) Open main navigation Close main navigation - [Catchbox Plus](https://catchbox.com/plus-system) - [Case studies](https://catchbox.com/case-study/) - [Book a demo](https://explore.catchbox.com/book-demo?hsCtaTracking=26c83435-1828-4cad-b17a-14b537503736%7C17332728-d507-4382-827d-62d2279a4c0e) - [Leave a Review](https://share.hsforms.com/2asY8tj1LSo2Wb24hR2X_GA292ev) [Leave a Review](https://share.hsforms.com/2asY8tj1LSo2Wb24hR2X_GA292ev) How can we help? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://help.catchbox.com/knowledge?hsLang=en) 2. [Catchbox Plus System](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en) 3. [Hub features](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#hub-features) # USB Device Mode 💡 **USB Device Mode** is a setting that determines how your computer recognizes and interacts with the Hub when connected via a USB-C cable. Depending on your setup, you can configure the Hub to act as a complete communication system or as a dedicated microphone source.  ### **Where on the Hub can you find this?** `Global Settings -> System -> USB Device Mode` ### **What is it for and why? ** This setting tells the Hub how to introduce itself to your computer. It determines if the audio signal travels in both directions (to and from the computer) or only in one direction (from the microphones to the computer). Depending on your audio setup, you may need to change how the computer handles Hub's signal. **🔸 Speakerphone Mode 🔸** In this mode, the Hub is recognized by your computer as both a Microphone and a Loudspeaker. Audio is sent to the computer (your voice) and received from the computer (the remote participants). **Best for** video conferencing platforms (Zoom, Teams, Google Meet) where you want to use the Hub as the primary audio interface for the call.  **Note:** Hub is not a loudspeaker itself. To actually hear the remote participants, you must connect it to external speakers via its analog or digital outputs.  **🔹 Microphone Mode 🔹** In this mode, the Hub performs strictly as a Microphone source. The computer only sees the 2 or 4 wireless microphone channels coming from the Hub and it doesn’t try to send any audio back to the Hub.  **Note:** Computer sees Hub as a single stereo audio input pair (2 channels - left and right). Mix of inputs is configured in Hub: `Out -> Mixout -> USB Out -> Mix Configuration` **Best for** university lecture capture or recording scenarios where you only need to record the presenter’s voice and don't need the Hub to manage room audio.  ### **Troubleshooting** It can be frustrating when audio doesn't *just work*. Here’s how you can tell if USB Device Mode is set to the wrong one for your specific setup. **💬 My computer volume is up, but no sound is coming out of my room speakers.** Hub is likely set to Microphone Mode. In this mode, the computer won't send any audio to the Hub. To fix this, switch to Speakerphone Mode so the computer knows to push the sound to the Hub and out to your speakers.  **💬  I see Catchbox Hub listed as both an Input and an Output in my settings.** This means the Hub is correctly set to Speakerphone Mode. It's the default and expected behavior for most hybrid setups. ### **Factory/Default Setting** Speakerphone mode.  ### **🔦 Simple Analogy** Speakerphone Mode is like a standard phone call. You can talk and hear the other person (remote participants) at the same time. And Microphone mode is like a megaphone because it only sends your voice out to the crowd (the computer), but it doesn't have a way to let the crowd/remote participants talk back to you. - [Catchbox Plus System](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#main-content) - [Overview](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#overview) - [Hub DSP receiver](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#hub-dsp-receiver) - [Hub features](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#hub-features) - [Stick Mic](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#stick-mic) - [Clip Mic](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#clip-mic) - [Cube Mic](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#cube-mic) - [System Firmware](https://help.catchbox.com/knowledge/catchbox-plus-system?hsLang=en#system-firmware) - [Product Setup](https://help.catchbox.com/knowledge/product-setup?hsLang=en#main-content) - [Product Setup](https://help.catchbox.com/knowledge/product-setup?hsLang=en#product-setup) - [Product Setup for Integrations](https://help.catchbox.com/knowledge/product-setup?hsLang=en#product-setup-for-integrations) - [How-to's](https://help.catchbox.com/knowledge/product-setup?hsLang=en#how-tos) - [Product Features](https://help.catchbox.com/knowledge/product-setup?hsLang=en#product-features) - [DECT Radio Protocol](https://help.catchbox.com/knowledge/product-setup?hsLang=en#dect-radio-protocol) - [Custom Branding](https://help.catchbox.com/knowledge/custom-branding?hsLang=en) - [Online Ordering & Shipping](https://help.catchbox.com/knowledge/online-ordering-shipping?hsLang=en#main-content) - [How to Order Plus System](https://help.catchbox.com/knowledge/online-ordering-shipping?hsLang=en#how-to-order-plus-system) - [Shipping](https://help.catchbox.com/knowledge/online-ordering-shipping?hsLang=en#shipping) - [Billing](https://help.catchbox.com/knowledge/online-ordering-shipping?hsLang=en#billing) - [Warranty & Returns](https://help.catchbox.com/knowledge/online-ordering-shipping?hsLang=en#warranty-returns) - [Troubleshooting](https://help.catchbox.com/knowledge/troubleshooting?hsLang=en#main-content) - [Technical Troubleshooting](https://help.catchbox.com/knowledge/troubleshooting?hsLang=en#technical-troubleshooting) - [Audio Quality Issues](https://help.catchbox.com/knowledge/troubleshooting?hsLang=en#audio-quality-issues) - [Mic Troubleshooting](https://help.catchbox.com/knowledge/troubleshooting?hsLang=en#mic-troubleshooting) - [Materials](https://help.catchbox.com/knowledge/materials?hsLang=en) - [Remote Control & Monitoring](https://help.catchbox.com/knowledge/remote-control-monitoring?hsLang=en) - [Beltpack Module](https://help.catchbox.com/knowledge/beltpack-module?hsLang=en) - [Discontinued](https://help.catchbox.com/knowledge/discontinued?hsLang=en#main-content) - [Catchbox Legacy Plus](https://help.catchbox.com/knowledge/discontinued?hsLang=en#catchbox-legacy-plus) - [Catchbox Mod](https://help.catchbox.com/knowledge/discontinued?hsLang=en#catchbox-mod) Copyright © 2026, Catchbox SIA