> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide.md).

# UX401 Installation Guide

This guide is the primary source of information for setting up and installing the UX401.

## Audience

This guide describes the CTLS reader's features, and provides the basic information for its installation and configuration.

## Organization

This guide is organized as follows:

* [Device Overview](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/device-overview.md) — Provides an overview of the reader.
* [Setup](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/setup.md) — Explains setup and installation of the device, selecting a location, and establishing connections with other devices.
* [Specifications](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/specifications.md) — Discusses the power requirements and dimensions of the CTLS device.
* [Maintenance and Cleaning](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/maintenance-and-cleaning.md) — Explains the maintenance of the CTLS device.
* [Service and Support](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/service-and-support.md) — Provides information on contacting your Verifone service provider and ordering accessories or documentation.
* [Troubleshooting Guidelines](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/troubleshooting-guidelines.md) — Provides troubleshooting guidelines for installation and configuration issues.
* [Appendix A](/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux4xx/ux401-installation-guide/appendix-a.md) — Shows the UL/cUL listing-compliant translations of all warning and caution messages in this installation guide.

## Related Documentation

To learn more about the reader, refer to the following set of documents and their associated Verifone Part Numbers (VPNs).

| Document                                   | Verifone Part Numbers |
| ------------------------------------------ | --------------------- |
| UX401 Certifications and Regulations Sheet | DOC159-034-EN         |
| UX401 Quick Installation Guide             | DOC159-035-EN         |
| UX301 Certifications and Regulations Sheet | DOC159-024-EN         |
| UX301 Quick Installation Guide             | DOC159-025-EN         |
| UX301 Installation Guide                   | DOC159-026-EN         |

## Conventions and Acronyms

This section describes the conventions and acronyms used in this guide.

### Document Conventions

Various conventions are used to help you quickly identify special formatting. The following table describes these conventions and provides examples of their use.

| Convention | Meaning                                                                              | Example                                                        |
| ---------- | ------------------------------------------------------------------------------------ | -------------------------------------------------------------- |
| Blue       | Text in blue indicates terms that are cross referenced.                              | See Conventions and Acronyms.                                  |
| NOTE       | The pencil icon is used to highlight important information.                          | If exchanging cables use a Verifone-approved cable.            |
| CAUTION    | The caution symbol indicates possible hardware or software failure, or loss of data. | Avoid placing metallic objects at the front of the card reader |
| WARNING    | The lightning symbol is used as a warning when bodily injury might occur.            | For safety, do not string cables or cords across a walkway.    |

### Acronym Definitions

Various acronyms are used in place of the full definition.

| Acronym   | Definition                           |
| --------- | ------------------------------------ |
| CTLS      | Contactless                          |
| EMV       | Europay, MasterCard and Visa         |
| IC        | Integrated Circuit                   |
| LED       | Light-Emitting Diode                 |
| MRA       | Merchandise Return Authorization     |
| NFC       | Near Field Communication             |
| RF        | Radio Frequency                      |
| RJ-45     | Registered Jack 45 modular connector |
| Single CI | Single Contactless Interface         |
| SMA       | SubMiniature version A connector     |

***Document Reference: DOC159-036-EN-A, Revision A (Verifone Part Number)***


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