---
product_id: 41097850
title: "IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset"
brand: "syba"
price: "€ 6.87"
currency: EUR
in_stock: false
url: https://www.desertcart.de/products/41097850-io-crest-si-pex15056-4-port-db9-serial-rs-232
store_origin: DE
region: Germany
---

# 25 Mbps per port speed 4 external RS-232 serial ports ASIX AX99100 chipset with fan-out cable IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset

**Brand:** syba
**Price:** € 6.87
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Upgrade your legacy gear with lightning-fast serial power!

## Quick Answers

- **What is this?** IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset by syba
- **How much does it cost?** € 6.87 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/41097850-io-crest-si-pex15056-4-port-db9-serial-rs-232)

## Best For

- syba enthusiasts

## Why This Product

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

## Key Features

- • **Quad-Port Expansion:** Add 4 RS-232 serial connections instantly
- • **Robust Flow Control:** Supports hardware and software flow control for zero data loss
- • **Plug & Play Versatility:** Includes fan-out cable & low-profile bracket for any setup
- • **Blazing Fast Serial Speeds:** Up to 25 Mbps per port for seamless data flow
- • **Industrial-Grade Reliability:** Perfect for POS, data acquisition, and embedded systems

## Overview

The IO Crest SI-PEX15056 is a PCI-Express x1 serial expansion card featuring 4 RS-232 ports powered by the ASIX AX99100 chipset. It delivers bi-directional speeds up to 25 Mbps per port, supports hardware and software flow control, and includes a fan-out cable plus a low-profile bracket for flexible installation in standard or compact PCs. Ideal for professionals needing reliable serial connectivity in industrial, POS, or embedded system environments.

## Description

The IOCrest SI-PEX15056 lets  you add 4 external RS-232 serial ports to your desktop computer.  It comes with a Fan-out cable as well as a spare low-profile bracket for installing in standard or low profile systems.  To be used in applications such as serial attached devices, serial networking/monitoring equipment, data acquisition system, POS terminal and industrial PC, add-on I/O cards-serial/USB,  and embedded systems-for I/O expansion.  .

## Features

- ASIX AX99100 chipset
- Bi-directional speeds up to 25 Mbps per port full Serial
- Modem control
- Supports hardware, software flow control

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Syba |
| Item model number | SI-PEX15056 |
| Item Weight | 8.8 ounces |
| Product Dimensions | 3.25 x 2.5 x 0.5 inches |
| Item Dimensions  LxWxH | 3.25 x 2.5 x 0.5 inches |
| Manufacturer | Syba |
| ASIN | B01LYRCG50 |
| Is Discontinued By Manufacturer | No |
| Date First Available | October 6, 2016 |

## Product Details

- **Brand:** Syba
- **Hardware Interface:** PCI Express x1
- **Style:** 4 port RS-232
- **Item Weight:** 8.8 ounces
- **Compatible Devices:** Personal Computer

## Images

![IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset - Image 1](https://m.media-amazon.com/images/I/81QRIO1-hFL.jpg)
![IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset - Image 2](https://m.media-amazon.com/images/I/81FenYcNnWL.jpg)
![IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset - Image 3](https://m.media-amazon.com/images/I/81Ej38WpxiL.jpg)
![IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset - Image 4](https://m.media-amazon.com/images/I/71mCXKP8S2L.jpg)
![IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset - Image 5](https://m.media-amazon.com/images/I/71Xch1PLqpL.jpg)

---

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---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-08*