---
title: Choosing a Series 3 Model
slug: legacy-docs/choosing-a-series-3-model
docTags: 
createdAt: 2025-03-11T06:56:56.993Z
---



BrightSign has released the Series 3 line of player models (XTx43, XDx33, HDx23, LS423). If you've been buying Series 2 players (4Kx42, XDx32, HDx22, LSx22), use this page to determine which Series 3 model to use as a replacement.

# Connector Changes

We've made a number of changes to connectors to improve the form factor and functionality of the player.  Each change is described below:

## GPIO

The DA-15 GPIO connector on previous models has been replaced with a standard 12-pin GPIO design manufactured by Phoenix Contact, Wurth Electronics, and others. Pluggable GPIO terminal blocks can be inserted into the GPIO connector to make bare-wire contacts (see [here](https://www.digikey.com/short/3101mw) for an example part). These terminal blocks can be purchased from the [BrightSign Store](https://www.brightsign.biz/digital-signage-products/accessories/GPIO-terminal-block). If you wish to source your own terminal blocks, make sure to use 4-pin or 6-pin blocks (12-pin blocks are extremely difficult to remove from the GPIO port).

![](https://api.archbee.com/api/optimize/511c8QBH-VHiwWnyzIwUb/RU1NDx9eJt6EpoyoaJfHv_new-and-old-diagram-rev-b.png)

## Serial

The DE-9 (more commonly referred to as DB-9) serial connector on previous models has been replaced with a 3.5mm serial jack. The new serial jack supports the same signaling parameters as the DE-9 connector; however, it does not have a pin to provide 5V of power for peripherals.

## USB

The XT1143, XD1033, and LS423 feature a USB Type C connector, whereas all other models use USB Type A only.

- The XT1143 and XD1033 feature a Type C connector in addition to a Type A connector.
- The LS423 features a single Type C connector, which is used to support both peripheral devices and analog audio output. To output analog audio on the LS423, you will need to purchase a USB-to-stereo converter cable and configure audio output on the device.

## SPDIF

On Series 3 models, digital audio out (SPDIF) is combined with analog audio out on the 3.5mm connector. This means that all new models except for the LS423 support digital audio; it also means that a 3.5mm SPDIF connector is required for digital audio applications.

# Connector Chart

This chart lists the connectors that the Series 2 and Series 3 models feature. Use it to determine which model to buy for specific functions:

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\*USB Type C only.