---
product_id: 62604954
title: "StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux (PEX1S553LP)"
brand: "startech"
price: "€ 1.76"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.es/products/62604954-startech-com-1-port-pci-express-rs232-serial-adapter-card
store_origin: ES
region: Spain
---

# Configurable 12V/5V power on pin 9 1x DB9 RS232 port, 460.8Kbps Low & full profile PCIe bracket included StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux (PEX1S553LP)

**Brand:** startech
**Price:** € 1.76
**Availability:** ✅ In Stock

## Summary

> 🔗 Future-Proof Your Legacy Tech with StarTech Precision!

## Quick Answers

- **What is this?** StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux (PEX1S553LP) by startech
- **How much does it cost?** € 1.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/62604954-startech-com-1-port-pci-express-rs232-serial-adapter-card)

## Best For

- startech enthusiasts

## Why This Product

- Trusted startech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fits Every Rig:** Includes both low profile and full profile brackets for effortless installation in any desktop or server chassis.
- • **Power Your Way:** Flexible power options (12V, 5V, or none) on pin 9 let you tailor the card to your unique hardware setup.
- • **Built for IT Professionals:** Backed by lifetime warranty and 24/5 multilingual tech support—because your mission-critical gear deserves no compromises.
- • **Cross-Platform Reliability:** Certified for Windows and Linux, empowering IT pros to deploy confidently across diverse environments.
- • **Seamless Legacy Connectivity:** One high-speed RS232 serial port with 16550 UART ensures smooth integration with your critical industrial and professional devices.

## Overview

The StarTech.com PEX1S553LP is a single-port PCI Express RS232 serial adapter card featuring a 16550 UART chipset, delivering up to 460.8Kbps data transfer. It offers configurable power options on pin 9, supports both low and full profile PCIe brackets for versatile installation, and is compatible with Windows and Linux systems. Designed for IT professionals, it comes with lifetime warranty and dedicated technical support, making it ideal for industrial, medical, and automation applications requiring reliable serial connectivity.

## Description

Full description not available

## Features

- 1 PORT SERIAL CARD: Serial controller card with 16550 UART based on ASIX MCS9922CV-AA, allows 1x DB9 port with bi-directional RS232 speeds up to 460.8Kbps per port, available 256 byte FIFO buffer; Upgraded version of our popular card PEX1S552LP
- OPTIONAL CONFIGURABLE POWER: PCI Express RS232 serial adapter card provides choice of 12v, 5v, or none through pin 9
- STANDARD PROFILE und LOW PROFILE BRACKET: PCIe serial card comes with a low profile bracket pre-installed und 1x full profile bracket is incl for versatile install; Supports Windows und Linux
- VERSATILE APPLICATIONS: For lowith standard profile desktop/servers with uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanner, oscilloscope
- THE IT PRO'S CHOICE: Designed and built for IT Professionals, this PCIe serial adapter card is backed for life, including free lifetime 24/5 multi-lingual technical assistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | StarTech |
| Product Dimensions | 8 x 10.5 x 2 cm; 44 g |
| Item model number | PEX1S553LP |
| Manufacturer | Startech |
| Series | PEX1S553LP |
| Colour | Green |
| Graphics Card Interface | PCI |
| Number of Serial Ports | 1 |
| Operating System | Microsoft |
| Are Batteries Included | No |
| Item Weight | 44 g |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** StarTech
- **Hardware interface:** PCI
- **Product dimensions:** 8L x 10.5W x 2H centimetres
- **Style:** Modern
- **Item weight:** 0.04 Kilograms

## Images

![StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux (PEX1S553LP) - Image 1](https://m.media-amazon.com/images/I/711ShPqFrgL.jpg)

## Questions & Answers

**Q: suitable for windows 7?**
A: Hi There,Yes this interface was needed to use a new PC with a shop till.  PC is running Windows 7 and works fine.Hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solved getting an RS232 interface on a brand new PC
*by D***K on 4 January 2014*

Small format PCIe card providing a cost effective and maximum performance RS232 interface card. Supplied drivers easily installed from CD, no problems but remember to set correct port number (not explained in instructions)

### ⭐⭐⭐⭐⭐ Good Service
*by D***N on 1 June 2018*

thanks for your service plug it in worked first time

### ⭐⭐⭐⭐⭐ Five Stars
*by D***S on 26 November 2016*

great product swiftly delivered

## Frequently Bought Together

- StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux , TAA (PEX1S553LP)
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**Shop now:** [https://www.desertcart.es/products/62604954-startech-com-1-port-pci-express-rs232-serial-adapter-card](https://www.desertcart.es/products/62604954-startech-com-1-port-pci-express-rs232-serial-adapter-card)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-25*