> 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/pxxx-series/p400/p400-quick-start-guide.md).
# P400 Quick Start Guide
This guide shows you how to set up the P400, P400 PLUS, or P400 DMSR and take your first payment.
Before you begin, confirm you have all devices, cables, and accessories listed below.
## What's in the Box
## Quick Setup Guide
{% stepper %}
{% step %}
### Remove the Back Cover
Slide the back cover down, in the direction of the arrows, to remove it.
{% endstep %}
{% step %}
### Insert the Cards and Connect the Cable
{% stepper %}
{% step %}
#### Insert the uSD and SAM cards
Slide the uSD card and the SAM card into their slots, in the direction of the arrows.
{% endstep %}
{% step %}
#### Connect the cable
Plug the cable connector into the port in the compartment.
{% endstep %}
{% step %}
#### Replace the back cover
Slide the cover back on, then turn the screw to secure it.
{% endstep %}
{% endstepper %}
{% endstep %}
{% step %}
### Power On the Terminal
Press and hold the key shown for about 10 seconds.
{% endstep %}
{% step %}
### Connect to a Cash Register, PC, or Network
Connect the cable to a cash register (A), a PC (B), or an Ethernet network with the power supply (C).
{% endstep %}
{% step %}
### Connect a V200c (Optional)
Connect the coiled cable between the terminal and the V200c, using either the Ethernet port or the USB port.
{% endstep %}
{% step %}
### Take a Payment
{% stepper %}
{% step %}
#### Swipe a card (P400 and P400 PLUS)
Swipe the card along the terminal in either direction of the arrow.
{% endstep %}
{% step %}
#### Swipe a card (P400 DMSR)
Swipe the card along the terminal in either direction of the arrow.
{% endstep %}
{% step %}
#### Tap a contactless card
Hold the card against the terminal display.
{% endstep %}
{% step %}
#### Insert a chip card
Insert the card into the slot at the bottom of the terminal.
{% endstep %}
{% endstepper %}
{% endstep %}
{% endstepper %}
## Full Installation Guide
For full device setup details, product information, and troubleshooting steps, refer to the Installation Guide (DOC435-003-EN).
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://docs.verifone.com/hardware-products/hardware/engage-devices/pxxx-series/p400/p400-quick-start-guide.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
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.
