---
title: "Bus Extender not recognized by TapHome Core"
description: "Bus Extender not detected by TapHome Core via USB? Check the Core Linux image version (2.9 or higher), the USB connection and other causes step by step."
url: "https://taphome.com/en/troubleshooting/hardware/bus-extender-not-recognized/"
language: en
lastmod: 2026-10-18
generator: hugo
---

# Bus Extender not recognized by TapHome Core

Bus Extender connected via USB is not detected by the Core

- **Support** Only TapHome Support can do this — contact us.

## How you recognise it

The Bus Extender module is connected to the TapHome Core via USB, but it is not recognized. The additional BUS ports provided by the Bus Extender do not appear in the system, and modules connected to it are not detected.

## Cause

The TapHome Core is running an older Linux image version (below 2.9) that does not support the Bus Extender hardware. Support for Bus Extender was added in Linux image version 2.9.

## Solution

### Step 1: Contact **TapHome Support** to update the Linux image on your Core to version 2.9 or higher.

Support TapHome support only

1. Go to **Settings → My location**
2. Contact TapHome Support and request a **Linux image update**
3. TapHome Support will remotely update the Core’s Linux image
4. After the update, the Bus Extender will be recognized

> The Linux image update can only be performed by TapHome Support. This is different from regular firmware updates that can be done through the app.

## How to Check Your Linux Image Version

- Go to **Settings → My location**
- Open the **Information** section
- Look for **OS Image Version** (should be 2.9 or higher for Bus Extender support)

## Related Documentation

- [Settings](https://taphome.com/en/docs/applications/settings/)

## Related issues

- [Switch or display controller shows too high humidity and too low temperature — the temperature compensation is too strong](https://taphome.com/en/troubleshooting/configuration/humidity-too-high-temperature-compensation/)

Last updated: 2026-10-18