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StarTech.com PCI2S4851050 2-Port RS422/485 PCI Serial Adapter Card 16C1050 UART
StarTech.com·MPN: PCI2S4851050

StarTech.com PCI2S4851050 2-Port RS422/485 PCI Serial Adapter Card 16C1050 UART

The StarTech.com PCI2S4851050 2-Port RS422/RS485 PCI Serial Adapter Card adds two industrial-grade serial ports, enabling reliable integration of legacy equipment into modern business systems.

  • Dual RS422/RS485 Ports: Connects two industrial or legacy serial devices, extending the operational life of critical equipment.
  • 16C1050 UART: Provides a high-performance serial interface with a 256-byte FIFO buffer, reducing CPU load and ensuring stable data transfer.
  • Wide OS Compatibility: Supports Windows client and server operating systems, simplifying integration into diverse IT environments.
  • Industrial Durability: Operates reliably across a -10 to 80 °C temperature range, suitable for demanding commercial settings.
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Product Overview

The StarTech.com PCI2S4851050 is a purpose-built 2-Port PCI Serial Adapter Card, featuring a high-performance 16C1050 UART and support for both RS422 and RS485 serial interface types, enabling robust data communication for specialized industrial and commercial applications. It utilizes a standard PCI/PCI-X host interface to seamlessly integrate into existing server or industrial PC systems.

Engineered with a single-chip design and a large 256-byte transmit/receive FIFO buffer, this adapter card minimizes CPU overhead while maximizing data throughput, ensuring reliable operation in demanding environments. Its broad operating system support, including Windows Server, further enhances its utility for business-critical deployments requiring legacy device connectivity.

  • Legacy Device Integration: Adds two RS422/RS485 serial ports, allowing businesses to connect and manage essential industrial or specialized legacy equipment without costly system replacements.
  • Enhanced Data Reliability: Features a 16C1050 UART with a 256-byte FIFO buffer, ensuring efficient, high-speed data transfer and reducing the risk of data loss in critical operations.
  • Flexible Industrial Modes: Supports both 2-wire and 4-wire RS485 modes, providing versatility to adapt to various industrial network topologies and communication requirements.
  • Reduced System Load: The efficient single-chip design and large FIFO buffer offload processing from the system CPU, improving overall system performance and stability for demanding applications.
  • Broad System Compatibility: Designed for PCI/PCI-X slots and compatible with a wide range of Windows and Linux operating systems, ensuring frictionless integration into existing IT infrastructures.

This adapter card provides a reliable and cost-effective solution for businesses needing to maintain or expand connectivity to critical serial-based systems.

Technical Specifications

1Performance & Business Impact
Host InterfacePCI/PCI-X
Serial Ports Quantity2
Serial Interface TypeRS-422, RS-485
UART16C1050
FIFO Buffer Size256 B
Baud Rate128 Kbit/s
2Connectivity & I/O
Host InterfacePCI/PCI-X
Output InterfaceSerial (DB9)
Serial Interface TypeRS-422, RS-485
Flow Control SupportYes
3Physical & Environmental
Width15 mm / 0.59 inches
Depth120 mm / 4.72 inches
Height45 mm / 1.77 inches
Weight58 g / 0.13 lbs
ColorGreen (PCB) / Black (Bracket)
Chassis MaterialPCB, Metal (Bracket)
Operating Temperature-10 to 80 °C
Operating Humidity5 - 85% RH (non-condensing)
4Lifecycle, Warranty & Compliance
WarrantyLimited Lifetime (Estimated)
In-Box ContentsPCI Serial Card, Driver CD, Instruction Manual
Compliance CertificationsCE, FCC, RoHS
Supported Server OSWindows Server 2000, 2003, 2008 R2, 2012
Shipping Weight152 g / 0.34 lbs

Full Specifications

Manufacturer Data
Ports & interfaces4
Host interfacePCI/PCI-X
Output interfaceSerial
Serial ports quantity2
Serial interface typeRS-422, RS-485
Features6
ChipsetSystemBase -SB16C1052PCI
Baud rate128 Kbit/s
FIFO (First In, First Out)256 B
Data bits5, 6, 7, 8
Stop bits1, 1.5, 2
Flow control supportYes
Weight & dimensions4
Width15 mm
Depth120 mm
Height45 mm
Weight58 g
Design2
InternalYes
CertificationCE, FCC
Operational conditions1
Operating temperature (T-T)-10 - 80 °C
System requirements1
Windows operating systems supportedWindows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64
Technical details1
Compliance certificatesRoHS
Packaging data1
Drivers includedYes
Logistics data1
Harmonized System (HS) code84733020
Other features1
Data transfer rate0.128 Mbit/s
Downloads2
Product Datasheet200 KB
Download
User Manual478 KB
Download

What This Solves

Integrating Industrial Control Systems

Many manufacturing and industrial facilities rely on legacy PLCs and SCADA systems for critical operations. This card provides the necessary RS422/RS485 serial ports to connect these systems to modern server infrastructure, ensuring continued data exchange and control.

Manufacturing plants, industrial automation facilities, process control environments

Connecting Specialized POS Terminals

Retail and hospitality businesses often use specialized point-of-sale (POS) terminals, barcode scanners, or receipt printers that require serial connectivity. The adapter card enables reliable communication between these peripherals and the central POS server, maintaining transaction efficiency and operational uptime.

Retail stores, restaurant chains, hotel front desks, franchise operations

Extending Server I/O for Data Acquisition

Organizations performing data acquisition or monitoring in specialized environments need to connect various sensors and instruments to a central server. This card expands the server's serial I/O capabilities, allowing for robust and high-speed data collection from multiple RS422/RS485 devices.

Medical labs, research institutions, building management systems, environmental monitoring

Key Features

2x RS422/RS485 Serial Ports

Enables the integration of two critical industrial or legacy devices, extending their operational lifespan and avoiding costly replacements.

16C1050 UART with 256-Byte FIFO

Ensures high-performance, reliable data transfer by reducing CPU overhead and preventing data loss during peak communication loads.

Baud Rate up to 128 Kbit/s

Supports fast serial communication speeds, facilitating efficient data exchange for time-sensitive industrial applications.

Operating Temperature -10 to 80 °C

Guarantees stable and continuous operation in harsh industrial environments, minimizing hardware failures and downtime.

Windows Server OS Support

Provides broad compatibility with enterprise server platforms, simplifying deployment and management within existing IT infrastructures.

Industry Applications

Manufacturing & Industrial

This card is essential for connecting and controlling PLCs, SCADA systems, and other automation equipment in factory and warehouse environments.

Retail & Hospitality

Enables the integration of legacy point-of-sale (POS) systems, barcode scanners, and specialized display units that rely on RS442/RS485 serial communication.

Government & Public Sector

Supports the connectivity of specialized control systems, data acquisition devices, and older infrastructure found in public facilities and agencies.

Transportation & Logistics

Facilitates communication with sensors, control panels, and data collection terminals in fleet management, port operations, and warehouse automation systems.

Frequently Asked Questions

What types of serial devices can I connect using this adapter card?

This adapter card supports RS422 and RS485 serial interfaces, allowing connection to industrial control systems, point-of-sale terminals, security cameras, building automation devices, and specialized sensors.

Is this card compatible with both standard and low-profile PCI slots?

The product description indicates it supports standard PCI expansion slots. For low-profile systems, a separate bracket would typically be required, but the provided data does not specify its inclusion.

What operating systems are supported for this PCI serial card?

This card supports a wide range of Windows operating systems, including Windows 7, 8, 8.1, 10 (32/64-bit), and Windows Server 2000, 2003, 2008 R2, 2012, along with Linux 2.4.x/2.6.x.

How does the 16C1050 UART improve performance over older serial cards?

The 16C1050 UART features a larger 256-byte FIFO buffer compared to older 16C550 UARTs, which significantly reduces CPU overhead and improves data throughput, especially in high-speed or multi-port applications.

Warranty & Returns

Manufacturer Warranty

Lifetime

Warranty is provided directly by the manufacturer and covers defects in materials and workmanship under normal use.

Return Policy

Returns subject to manufacturer approval

Hardware returns are governed by the manufacturer's return policy. Some products are non-returnable or subject to restocking fees. Defective items are handled under the manufacturer warranty. Contact Zent Networks before initiating any return.

$22.93