StarTech.com PCI Express serial card with breakout cable showing four DB-9 ports and PCIe interface

Multi-Protocol Serial Integration Made Simple

This PCIe serial card combines RS232 and RS422/485 capabilities in one efficient solution. The integrated breakout cable design ensures clean connectivity while maintaining signal integrity across all four ports. The card's architecture enables seamless communication between legacy and modern industrial equipment.

Technical Specifications

  • Supports RS232, RS422, and RS485 protocols
  • PCIe x1 interface for modern systems
  • 3.59 Mbit/s maximum data transfer rate

Applications

  • Industrial automation control systems
  • Legacy equipment integration
  • Manufacturing process monitoring
Close-up view of the DB-37 connector on the PCI Express serial card bracket

High-Density DB-37 Port Connection

The card's primary DB-37 connector serves as the central hub for all serial communications. This space-efficient design consolidates multiple connections while maintaining signal clarity. The robust metal bracket ensures stable mounting and reliable operation in industrial environments.

Technical Specifications

  • Single DB-37 connector interface
  • Supports multiple serial protocols
  • Industrial-grade connection durability

Applications

  • Data center serial consolidation
  • Industrial control systems
  • Manufacturing equipment integration
Top view of the PCI Express serial card circuit board showing component layout

Advanced Circuit Design for Reliable Performance

The card's sophisticated PCB layout features multiple serial controllers and precise signal routing for optimal performance. Each component is carefully positioned to minimize interference and ensure consistent data transmission across all ports.

Technical Specifications

  • Multi-layer PCB design
  • Independent serial controllers
  • EMI-resistant layout

Applications

  • Mission-critical communications
  • Real-time monitoring systems
  • Multi-device serial networks
Angled view of the PCI Express serial card showing low-profile design

Low-Profile Ready Design

The card's adaptable form factor accommodates both standard and low-profile chassis installations. The included bracket options ensure compatibility with various system configurations while maintaining full functionality.

Technical Specifications

  • Dual bracket compatibility
  • Standard and low-profile options
  • Compact PCIe form factor

Applications

  • Space-constrained installations
  • Server room deployments
  • Compact industrial systems
Detailed view of the PCI Express serial card showing build quality and components

Industrial-Grade Build Quality

Every component is selected for longevity and reliability in demanding environments. The robust PCB construction and high-quality connectors ensure consistent performance even under heavy usage conditions.

Technical Specifications

  • Industrial-grade components
  • Heavy-duty PCB construction
  • Enhanced thermal management

Applications

  • 24/7 operation environments
  • High-reliability applications
  • Industrial automation systems
Close-up of the serial breakout cable showing four DB-9 connectors

Flexible Connectivity Solution

The breakout cable design provides easy access to all four serial ports while maintaining organized cable management. Each DB-9 connector is clearly marked for straightforward installation and configuration.

Technical Specifications

  • Four independent DB-9 ports
  • Labeled port identification
  • Unified cable management

Applications

  • Multi-device serial networks
  • Point-of-sale systems
  • Industrial equipment monitoring

Product details

General Information
Manufacturer

StarTech.com

Manufacturer Part Number

PEX4S232485

Brand Name

StarTech.com

Product Name

4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485

Packaged Quantity

1

Product Type

Multiport Serial Adapter

Technical Information
Host Interface

PCI Express x1

Maximum Data Transfer Rate

3.59 Mbit/s

Platform Supported

PC

Interfaces/Ports
Ports Expandability

4 x DB-9 RS-232/422/485 - Serial, Via Cable

Physical Characteristics
Form Factor

Plug-in Card

Height

2.7

Width

0.6

Weight (Approximate)

2.40 oz

Miscellaneous
Package Contents

  • 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485
  • 1 x Breakout Cable
  • 1 x Low Profile Bracket
  • 1 x Driver CD
  • 1 x Instruction Manual

Environmentally Friendly

Yes

Environmental Certification

WEEE
RoHS
REACH

Country of Origin

Taiwan

TAA Compliant

Yes

Warranty
Limited Warranty

Lifetime

Included in the Box

  • icon_list|Main unit|Lift Ergo Mouse Main unit icon

    Serial Card - Main unit

FAQs

What are the main features of the StarTech.com PEX4S232485 Serial Card?
The StarTech.com PEX4S232485 is a 4-port PCI Express serial combo card that offers 2 RS232 ports and 2 RS422/RS485 ports. It supports multiple serial communication protocols including RS-232, RS-422, RS-485 2-wire, and RS-485 4-wire operating modes. The card comes with both low and full profile brackets, features a maximum data transfer rate of 3.59 Mbit/s, and includes a breakout cable for clean connection management. It's compatible with PC systems through a PCI Express x1 interface.
What's included in the package?
The package includes the 4-port PCI Express PCIe Serial Combo Card, a breakout cable, a low profile bracket, a driver CD, and an instruction manual. All components are backed by StarTech.com's lifetime warranty and free technical support.
What is the maximum data transfer rate of this card?
The StarTech.com PEX4S232485 supports a maximum data transfer rate of 3.59 Mbit/s, making it suitable for various serial communication applications requiring reliable data transfer.
Is this card compatible with different form factors?
Yes, the card is designed to be compatible with both full-sized and small form factor systems. It comes with both low and full profile brackets included, allowing for flexible installation options depending on your PC case size.
What type of warranty does this product come with?
The StarTech.com PEX4S232485 comes with a lifetime warranty and includes free lifetime technical support, providing long-term protection for your investment and ongoing assistance when needed.

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