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| 1 | +--- |
| 2 | +title: "Supply USB power via the VUSB, VBUS or 5V pin on Nano boards" |
| 3 | +id: 360014779679 |
| 4 | +--- |
| 5 | + |
| 6 | +Many Arduino Nano boards are powered by 3.3 V but include a dedicated pin—labeled VUSB, VBUS, or 5V—that can output power from the USB port. This pin provides direct access to the 5 V line coming from the USB connection and can be used to power external components such as sensors, modules, or LEDs, while the board itself continues running at 3.3 V. |
| 7 | + |
| 8 | +In this article: |
| 9 | + |
| 10 | +* [Before you begin](#before-you-begin) |
| 11 | +* [Solder VUSB jumper pads (if required)](#solder-vusb-jumper-pads) |
| 12 | +* [Use the VUSB or VBUS Pin](#use-the-vusb-or-vbus-pin) |
| 13 | + |
| 14 | +--- |
| 15 | + |
| 16 | +## Before you begin |
| 17 | + |
| 18 | +> [!WARNING] |
| 19 | +> Do not connect the VUSB/VBUS/5V pin to any of the other pins on the board. |
| 20 | +
|
| 21 | +* The VUSB/VBUS/5V pin outputs power directly from the USB connector when enabled. |
| 22 | +* Power from the USB supply can range from 4.4 V to 5.5 V, per USB specifications. |
| 23 | +* Do not connect the VUSB/VBUS/5V pin to any of the other pins on the board. Supplying 5 V to other pins can permanently damage the board. |
| 24 | + |
| 25 | +--- |
| 26 | + |
| 27 | +## Requirements for supported boards |
| 28 | + |
| 29 | +There are two main requirements for using the "VUSB" pin: |
| 30 | + |
| 31 | +* The board must be powered via USB. If you power the board through other means—such as a battery connected to Vin or a 3.3 V supply—the pin will not output anything. |
| 32 | +* On some boards, the VUSB line must be enabled by connecting a pair of jumper pads. |
| 33 | + |
| 34 | +The table below summarizes which Nano boards support 5 V output, what the output pin is called, and whether any action is required to enable it. |
| 35 | + |
| 36 | +| Board | 5 V output pin | How to enable | |
| 37 | +|:-------------------------------|:---------------|:----------------------------------------------------| |
| 38 | +| Arduino Nano 33 BLE | VUSB | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 39 | +| Arduino Nano 33 BLE Rev2 | VUSB | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 40 | +| Arduino Nano 33 BLE Sense | VUSB | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 41 | +| Arduino Nano 33 BLE Sense Rev2 | VUSB | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 42 | +| Arduino Nano 33 IoT | VUSB | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 43 | +| Arduino Nano ESP32 | VBUS | Enabled by default | |
| 44 | +| Arduino Nano Matter | 5V | Enabled by default | |
| 45 | +| Arduino Nano RP2040 Connect | VBUS | [Enable by soldering VUSB jumper pads](#solder-vusb-jumper-pads) | |
| 46 | + |
| 47 | +> [!TIP] |
| 48 | +> On boards with VUSB jumper pads, the **VUSB pin** is located directly under the VUSB jumper pads on the bottom side of the board. |
| 49 | +
|
| 50 | +--- |
| 51 | + |
| 52 | +## Solder VUSB jumper pads (if required) {#solder-vusb-jumper-pads} |
| 53 | + |
| 54 | +Some boards have jumper pads that need to be connected to enable VUSB output: |
| 55 | + |
| 56 | +| Board | Jumper on bottom | Jumper on top | |
| 57 | +|:-------------------------------|:----------------:|:-------------:| |
| 58 | +| Arduino Nano 33 BLE | ✔ | | |
| 59 | +| Arduino Nano 33 BLE Rev2 | ✔ | ✔ | |
| 60 | +| Arduino Nano 33 BLE Sense | ✔ | | |
| 61 | +| Arduino Nano 33 BLE Sense Rev2 | ✔ | ✔ | |
| 62 | +| Arduino Nano 33 IoT | ✔ | | |
| 63 | +| Arduino Nano RP2040 Connect | ✔ | | |
| 64 | + |
| 65 | +To enable VUSB power on these boards, two unconnected solder pads labeled for VUSB must be shorted with solder or a zero-ohm resistor. This forms a bridge that allows USB power to reach the VUSB/VBUS pin. |
| 66 | + |
| 67 | +### Find the VUSB pads on the bottom side of the board |
| 68 | + |
| 69 | +On all supported boards, you can find a set of VUSB jumper pads on the bottom side of the board. |
| 70 | + |
| 71 | + |
| 72 | + |
| 73 | +### Find the VUSB pads on the top side of the board |
| 74 | + |
| 75 | +These boards include an additional jumper on the top side of the board. You can use either the top or bottom jumper to enable VUSB. |
| 76 | + |
| 77 | + |
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