What operating systems is this adapter card compatible with?

The adapter card is compatible with Windows 8/8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64), Windows Server 2012, 2008 R2, 2003, 2000 (32/64), and Linux 2.4.x / 2.6.x.

What items are included in the package when I purchase this card?

The package includes the 2 port PCI RS422/485 card, a Driver CD, low profile (half-height) brackets, and a User Manual.

What is the maximum data transmission rate of this card?

The maximum data transmission rate of this card is 128 Kbps.

What are the dimensions of this adapter card, and will it fit in my system?

The dimensions of the adapter card are 1.77 inches x 4.72 inches x 0.59 inches.

Can this adapter card operate in different environmental conditions?

Yes, this adapter card can operate in a temperature range of -10°C to 80°C and a humidity range of 5-85% RH.

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StarTech.com 2 Port PCI RS422/485 Serial Adapter Card with 161050 UART Model PCI2S4851050

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Add two RS422/485 serial ports through a standard or low profile PCI expansion slot
2 Port PCI RS422/485 Serial Adapter Card with 161050 UART
PCI serial card supports maximum data transmission rate of 128Kbps
rs422 serial card
rs485 serial card
dual port serial card
2 port rs422 pci card
PCI serial expansion card supports both 2-wire and 4-wire RS485 modes

Overview

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Add two RS422/485 serial ports through a standard or low profile PCI expansion s

Model
Brand	StarTech.com
Model	PCI2S4851050

Details
Type	PCI to Serial Port Card
External Ports	2 x Serial Ports
Operating Systems Supported	Windows 7 (32/64bit)/ Vista(32/64)/ XP(32/64) Windows Server 2008 R2/ 2003(32/64)/ 2000 Linux 2.4.x/ 2.6.x
Specifications	Bus Type: PCI / PCI-X (5 / 3.3V) Card Type: Standard Profile (LP bracket incl.) Chipset ID: SystemBase -SB16C1052PCI Connector Type(s): PCI / PCI-X (Universal 3.3 & 5V 32-bit) Male Data Bits: 5, 6, 7, 8 External Ports: DB-9 (9 pin ; D-Sub) Male FIFO: 256 Bytes Flow Control: Xon, Xoff, RTS#, CTS# Humidity: 5~85% RH Included in Package: 2 port PCI RS422/485 card Driver CD Low profile (half-height) brackets User Manual Industry Standards: PCI Local Bus Specification 2.3 PCI Power Management 1.1 Interface: Serial Max Baud Rate: 128 Kbps Operating Temperature: -10°C to 80°C (14°F to 176°F) OS Compatibility: Windows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64) Windows Server® 2012, 2008 R2, 2003, 2000 (32/64) Linux 2.4.x / 2.6.x Parity: Even, Odd, or No Parity Port Style: Integrated on Card Ports: 2 Product Height: 45 mm [1.8 in] Product Length: 120 mm [4.7 in] Product Weight: 58 g [2 oz] Product Width: 15 mm [0.6 in] Serial Protocol: RS-422/485 Shipping (Package) Weight: 0.2 kg [0.3 lb] Stop Bits: 1, 1.5, 2 Storage Temperature: -20°C to 100°C (-4°F to 212°F)

Features
Features	Supports PCI Power Management 1.1 Compliant with PCI Local Bus Specification 2.3 Supports maximum data transmission rate of 12.8kbps Supports Hardware and Software flow control Jumper pins for RS422/485 toggling 16C1050 UART with 256-byte Deep FIFO Supports 2-wire and 4-wire RS485 modes

Dimensions & Weight
Dimensions	1.77" x 4.72" x 0.59"
Weight	0.33

Additional Information
First Listed on Newegg	January 19, 2026

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Item#: 9SIBSWCKS02074

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