# Connect Ledger devices

## Supported Ledger devices

Currently, SubWallet supports these Ledger devices via **USB portal** only:

* Ledger Nano S\*
* Ledger Nano S Plus
* Ledger Nano X

*(\*): Ledger Nano S is being phased out by Ledger (read this* [*article*](https://support.ledger.com/article/Ledger-Nano-S-Limitations)*). If you have this device, upgrade it to the newer Ledger devices for a more seamless experience, with the latest and future features and security improvements.*

{% embed url="<https://www.youtube.com/watch?v=RnLHT_tQ0yA>" %}

***

## Types of Ledger apps

Currently, there are 4 types of Ledger apps available for connecting your Ledger device. Review and select the relevant article based on the type that best fits your needs.

### Network-specific apps

To connect your Ledger via these apps, choose the network's app on your Ledger and select the corresponding network on SubWallet.

*For example, to connect Ledger Avail account(s) to SubWallet, you need to choose the Avail app on your Ledger and then select the "**Avail**" option on SubWallet.*

{% content-ref url="/pages/jlEu76cU6wnBMdEwtOfu" %}
[Connect via network-specific apps](/main/web-dashboard-user-guide/cold-wallet-management/connect-ledger-devices/connect-via-network-specific-apps.md)
{% endcontent-ref %}

### EVM apps

To connect your Ledger via these apps, choose the network's app on your Ledger and select the "**EVM networks**" option on SubWallet.

*For example, to connect Ledger Arbitrum One account(s) to SubWallet, you need to choose the Arbitrum One app on your Ledger and then select the "**EVM networks**" option on SubWallet.*

{% content-ref url="/pages/PdDEUBrOrCoApImLvnuI" %}
[Connect via EVM apps](/main/web-dashboard-user-guide/cold-wallet-management/connect-ledger-devices/connect-via-evm-apps.md)
{% endcontent-ref %}

### Polkadot app

The Polkadot app lets your Ledger device sign transactions on all Substrate-based networks as long as they have undergone runtime updates (e.g., Polkadot, Polkadot Asset Hub - Statemint).

{% hint style="warning" %}
To use this app, make sure that the Polkadot app installed in your Ledger is on version v100.0.5 and above.
{% endhint %}

{% content-ref url="/pages/qhxM5fBwLJSS2xJJPwgT" %}
[Connect via the Polkadot app](/main/web-dashboard-user-guide/cold-wallet-management/connect-ledger-devices/connect-via-the-polkadot-app.md)
{% endcontent-ref %}

### Polkadot Migration app

Before using this app, make sure the network you want to connect to has undergone runtime updates. To check if a network has performed this action, visit the [Parachains Metadata dashboard](https://dashboards.data.paritytech.io/metadata.html). If it hasn't, continue using the corresponding Ledger app.

This app is designed for users to migrate tokens to the address generated by the Polkadot app and needs to be used when:

* User has assets on a network that has updated its runtime (e.g., having KSM on the Kusama app)
* User has assets stuck on a network that has updated its runtime (e.g., having KAR stuck on the Kusama app)

{% content-ref url="/pages/t2gWs9WKfP1yxLAADIqK" %}
[Connect via the Polkadot Migration app](/main/web-dashboard-user-guide/cold-wallet-management/connect-ledger-devices/connect-via-the-polkadot-migration-app.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.subwallet.app/main/web-dashboard-user-guide/cold-wallet-management/connect-ledger-devices.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.