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FAQs for Openterface KVM Extension for uConsole

Welcome to the FAQ for our Openterface KVM Extension for uConsole.
If you don't find what you need, email us at support@openterface.com or join our community on Discord.

⚠️ FAQs may be outdated — please let us know if you see anything that needs updating.

Quick Navigation

Installation & Hardware

How does the KVM Extension Board work?

It captures HDMI output from a target device and displays it on the uConsole. At the same time, the uConsole's keyboard and trackball are used to control the target device via USB HID emulation.

Can I use this with the 4G/LTE module installed?

No. This board occupies the same expansion slot. You'll need to choose between cellular connectivity or KVM functionality.

Why do I need the washers?

The KVM Extension board is 1.0mm thick (thinner than the original 4G/LTE 1.2mm). The washers compensates for this difference and ensures proper spring contactor pressure for reliable connections.

What tools do I need for installation?

You'll need a hex screwdriver to remove and install the mounting screws. ESD precautions (wrist strap or grounded surface) are recommended but not required.

Is the installation reversible?

Yes, you can remove the KVM Extension board and reinstall the original 4G/LTE module at any time. Keep the original module and screws in a safe place.

Compatibility

Which uConsole models are compatible?

Compatible with uConsole devices that feature the standard 4G/LTE expansion slot. Check your device specifications to confirm compatibility.

What target devices can I control?

Any device with HDMI output, including:

  • Desktop computers and servers
  • Single-board computers (Raspberry Pi, etc.)
  • Embedded systems
  • Industrial PCs
  • Gaming consoles
  • Media players

Does the target device need special software?

No software installation is required on the target device. The KVM Extension works with any device that has HDMI output.

Can I control multiple target devices?

You can control one target device at a time. To switch between devices, disconnect the HDMI cable and connect it to a different target device.

Control & Features

What input methods are supported?

  • Full keyboard emulation including multimedia keys
  • Absolute and relative mouse positioning
  • Computer wake-up function
  • Audio passthrough via HDMI

Can I transfer files between uConsole and target device?

The KVM Extension provides video and input control only. For file transfer, you'll need to use other methods like network sharing, USB drives, or cloud storage.

Does it support BIOS-level access?

Yes, direct USB HID emulation allows full BIOS-level control, unlike network-based remote access tools.

Can I use it for gaming?

While technically possible, the latency and control method may not be ideal for fast-paced gaming. It's better suited for system administration and development tasks.

Video & Audio

What video resolutions are supported?

The extension accepts standard HDMI video input. The actual display resolution depends on your uConsole's screen capabilities.

Is audio supported?

Yes, HDMI embedded audio is passed through to the uConsole's speakers.

What about video latency?

The extension provides low-latency video suitable for real-time interaction and BIOS-level troubleshooting.

Can I use adapters for different video outputs?

Yes, you can use HDMI adapters for devices with VGA, DVI, or DisplayPort outputs.

Troubleshooting

No video signal appears

  • Check HDMI cable connection on both ends
  • Verify target device is powered on and set to output via HDMI
  • Try a different HDMI cable
  • Restart the Openterface App

Control input not working

  • Ensure the KVM Extension board is properly seated
  • Check that spring contactors are making good contact
  • Restart the Openterface App
  • Verify the target device recognizes USB input

Board doesn't fit properly

  • Ensure the washers is properly positioned
  • Check that screws are not overtightened
  • Verify the board sits flat without movement
  • Make sure you're using the correct mounting screws

App doesn't detect the extension

  • Check that the board is properly installed
  • Restart the uConsole
  • Reinstall the Openterface App
  • Verify you're using the correct software version

More

Is the software open source?

Yes! Our Openterface Connect Apps are fully open-source and available on our GitHub repository.

Where can I get support?