---
title: "Device and Transport Identifiers"
category: reference
---

# Device and Transport Identifiers

Technical identifiers for Ledger devices when implementing custom USB and Bluetooth integrations outside of DMK or LedgerJS.

## Common Identifiers

- **USB Vendor ID**: `0x2c97` (Ledger)
- **Bluetooth Service Name**: `Ledger`

## Device-Specific Identifiers

### Ledger Nano S Plus

| Identifier Type | Mode       | Value    |
| --------------- | ---------- | -------- |
| USB Product ID  | Normal     | `0x50`   |
| USB Product ID  | Bootloader | `0x0005` |

**Bluetooth**: Not supported

---

### Ledger Nano X

| Identifier Type         | Mode/Service  | Value                                  |
| ----------------------- | ------------- | -------------------------------------- |
| USB Product ID          | Normal        | `0x40`                                 |
| USB Product ID          | Bootloader    | `0x0004`                               |
| BLE Service UUID        | Main          | `13d63400-2c97-0004-0000-4c6564676572` |
| BLE Characteristic UUID | Notify        | `13d63400-2c97-0004-0001-4c6564676572` |
| BLE Characteristic UUID | Write         | `13d63400-2c97-0004-0002-4c6564676572` |
| BLE Characteristic UUID | Write Command | `13d63400-2c97-0004-0003-4c6564676572` |

---

### Ledger Stax

| Identifier Type         | Mode/Service  | Value                                  |
| ----------------------- | ------------- | -------------------------------------- |
| USB Product ID          | Normal        | `0x60`                                 |
| USB Product ID          | Bootloader    | `0x0006`                               |
| BLE Service UUID        | Main          | `13d63400-2c97-6004-0000-4c6564676572` |
| BLE Characteristic UUID | Notify        | `13d63400-2c97-6004-0001-4c6564676572` |
| BLE Characteristic UUID | Write         | `13d63400-2c97-6004-0002-4c6564676572` |
| BLE Characteristic UUID | Write Command | `13d63400-2c97-6004-0003-4c6564676572` |

---

### Ledger Flex

| Identifier Type         | Mode/Service  | Value                                  |
| ----------------------- | ------------- | -------------------------------------- |
| USB Product ID          | Normal        | `0x70`                                 |
| USB Product ID          | Bootloader    | `0x0007`                               |
| BLE Service UUID        | Main          | `13d63400-2c97-3004-0000-4c6564676572` |
| BLE Characteristic UUID | Notify        | `13d63400-2c97-3004-0001-4c6564676572` |
| BLE Characteristic UUID | Write         | `13d63400-2c97-3004-0002-4c6564676572` |
| BLE Characteristic UUID | Write Command | `13d63400-2c97-3004-0003-4c6564676572` |

---

### Ledger Nano Gen5

| Identifier Type | Mode/Service | Value    |
| --------------- | ------------ | -------- |
| USB Product ID  | Normal       | `0x80`   |
| USB Product ID  | Bootloader   | `0x0008` |

**Bluetooth**: Nano Gen5 devices may use one of two BLE identifier sets. The DMK automatically detects which set is used by the device.

**BLE Identifier Set 1:**

| Identifier Type         | Service       | Value                                  |
| ----------------------- | ------------- | -------------------------------------- |
| BLE Service UUID        | Main          | `13d63400-2c97-8004-0000-4c6564676572` |
| BLE Characteristic UUID | Notify        | `13d63400-2c97-8004-0001-4c6564676572` |
| BLE Characteristic UUID | Write         | `13d63400-2c97-8004-0002-4c6564676572` |
| BLE Characteristic UUID | Write Command | `13d63400-2c97-8004-0003-4c6564676572` |

**BLE Identifier Set 2 (this happens rarely, only in Bootloader Mode, and only in early versions of the OS):**

| Identifier Type         | Service       | Value                                  |
| ----------------------- | ------------- | -------------------------------------- |
| BLE Service UUID        | Main          | `13d63400-2c97-9004-0000-4c6564676572` |
| BLE Characteristic UUID | Notify        | `13d63400-2c97-9004-0001-4c6564676572` |
| BLE Characteristic UUID | Write         | `13d63400-2c97-9004-0002-4c6564676572` |
| BLE Characteristic UUID | Write Command | `13d63400-2c97-9004-0003-4c6564676572` |

## Usage Notes

- **Normal Mode**: Standard device operation
- **Bootloader Mode**: Device firmware update mode
- **Notify Characteristic**: Receives data from device
- **Write Characteristic**: Sends data with response
- **Write Command Characteristic**: Sends data without response

## Device Support Matrix

| Device      | USB | Bluetooth |
| ----------- | --- | --------- |
| Nano S Plus | ✅   | ❌         |
| Nano X      | ✅   | ✅         |
| Stax        | ✅   | ✅         |
| Flex        | ✅   | ✅         |
| Nano Gen 5  | ✅   | ✅         |