> ## Documentation Index
> Fetch the complete documentation index at: https://devzone.nayax.com/llms.txt
> Use this file to discover all available pages before exploring further.

# UNO-mini Overview

> Hardware overview and specifications for the Nayax UNO-mini contactless EMV reader.

The UNO-mini is Nayax's compact contactless EMV reader for OEM manufacturers and kiosk integrators who need certified EMV payment acceptance in their hardware.

<Frame>
  <img src="https://mintcdn.com/nayax-44d6e37b/bjIiJDpopc7uznVZ/images/docs/uno-mini/overview-product-photo.png?fit=max&auto=format&n=bjIiJDpopc7uznVZ&q=85&s=04d9af091575a015346d80bbe48ad40f" alt="UNO-mini contactless EMV reader" width="200" data-path="images/docs/uno-mini/overview-product-photo.png" />
</Frame>

## System architecture

The UNO-mini is part of the Nayax OEM POS Solution, a three-component system that handles the full payment stack so you can focus on your application's user interface and business logic.

The three components are:

* **UNO-mini**: The cashless reader hardware. Handles contactless card reading and EMV processing at the device level.
* **EMV Core**: Client software that runs on the kiosk controller (Android, Linux, or RTOS). Serves as the integration layer between your application, the payment processor gateway, and the UNO-mini.
* **Nayax Core**: Pre-integrated cloud service for remote management of terminals and clearing transactions worldwide.

Nayax also provides documentation and sample code to support system integrators throughout the integration process.

## Specifications

The following table lists the main hardware specifications.

| Parameter                  | Value                                                                                                                                         |
| :------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------- |
| **Power**                  | 5–14 VDC; 0.7 W idle, 3 W peak                                                                                                                |
| **CPU**                    | Arm 32-bit Cortex-M33 with TrustZone and enhanced security features                                                                           |
| **CPU speed**              | 160 MHz                                                                                                                                       |
| **CPU memory**             | Flash: 2 MB; RAM: 786 KB                                                                                                                      |
| **External memory**        | Flash: 8 MB                                                                                                                                   |
| **Host communications**    | USB 2.0 FS; UART TTL                                                                                                                          |
| **Contactless EMV**        | EMVCo L1 v3.x compatible; full NFC support including card emulation                                                                           |
| **Security**               | 2 AES coprocessors (one with DPA resistance); public key accelerator (DPA resistant); true random number generator (NIST SP800-90B compliant) |
| **SAM interfaces**         | 1 x micro SAM                                                                                                                                 |
| **LEDs**                   | 4 green (EMV)                                                                                                                                 |
| **Operating temperature**  | -35°C to 70°C                                                                                                                                 |
| **Humidity**               | 10%–90% non-condensing                                                                                                                        |
| **Dimensions (H x W x D)** | 49.5 x 49.5 x 10.8/13.4 mm                                                                                                                    |
| **Main connector**         | Molex 5054330871, 8 pins                                                                                                                      |
| **Additional connector**   | 1 x micro SIM (3FF)                                                                                                                           |
| **Regulatory**             | FCC, CE, UL, RoHS, TQM                                                                                                                        |
| **EMV certification**      | Levels 1, 2, and 3                                                                                                                            |

## Supported payment methods

The UNO-mini accepts all major contactless payment methods:

* Debit and credit cards
* Mobile and NFC contactless payments
* Prepaid cards and closed-loop payment solutions

## Next steps

<CardGroup cols={2}>
  <Card title="Mechanical Integration" href="/docs/integrate-pos-device/emv-core/uno-mini/uno-mini-mechanical" icon="link">
    Mount the UNO-mini in your hardware enclosure and configure serial number display.
  </Card>

  <Card title="Get Started with EMV Core" href="/docs/integrate-pos-device/emv-core/get-started/emv-core-get-started-1" icon="link">
    Install the EMV Core SDK and connect to the UNO-mini from your host application.
  </Card>
</CardGroup>