---
title: "Does the Omega support external devices that connect using RS232"
slug: "does-the-omega-support-external-devices-that-connect-using-rs232"
updated: 2024-04-04T14:06:29Z
published: 2024-04-04T14:06:29Z
canonical: "kb.pharos.com/does-the-omega-support-external-devices-that-connect-using-rs232"
---

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

# Does the Omega support external devices that connect using RS232

The SmartPAD contains an internal serial port, which can be used to attach a serial card reader. This port is accessed by removing the back of the SmartPAD.

Note: If the customer removes the back of the SmartPAD, it voids the Pharos warranty to the customer. However, Pharos staff are allowed to take the SmartPAD back off to connect a card reader.

The port is a 9-pin RS-232 serial male connector that supports card readers configured to 9600 baud, 8, n, 1 that send an ID string terminated by a non printable char like CR. The DTR pin on the socket can supply 5 Volts at 500 mA to the card reader. The pin-outs for the port are as follows:

Pin Name

1 NC 2 Rx 3 Tx 4 DTR 5 GND 6 NC 7 RTS 8 CTS 9 NC

NC = not connected

SmartPAD software does not support the RTS and CTS signals. No control signals are sent or acknowledged by the DTR pin (pin 4).

## Related

- [Tracker silent installs not working in combination with the /dir option](/tracker-silent-installs-not-working-in-combination-with-the-dir-option.md)
- [Pharos Blueprint Enterprise: The "UNKNOWN" User, Explained](/pharos-blueprint-enterprise-the-unknown-user-explained.md)
- [Does the Pharos Omega PS60 support DDNS?](/does-the-pharos-omega-ps60-support-ddns.md)
- [How can I change the Pharos Updater Service - packages and log file location.](/how-can-i-change-the-pharos-updater-service-packages-and-log-file-location.md)