StarTech.com · PEX4S232485

StarTech 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 PEX4S232485

Four-port PCI Express serial combo card with two RS232 and two configurable RS422/RS485 connections via an included breakout cable.

Quick answer: Adds four DB9 serial ports through one PCIe slot, supporting two RS232 ports plus two RS422 or two-/four-wire RS485 ports.

Best forIndustrial control, building systems, automation, POS and mixed-protocol serial installations requiring multiple DB9 connections.

Check before orderingConfirm the required RS232, RS422 or RS485 wiring mode, application settings and operating-system support before installation.

Answers before you buy

Frequently asked questions

What does PEX4S232485 do?

Adds four DB9 serial ports through one PCIe slot, supporting two RS232 ports plus two RS422 or two-/four-wire RS485 ports.

Who is this product best for?

Industrial control, building systems, automation, POS and mixed-protocol serial installations requiring multiple DB9 connections.

What should I check before ordering?

Confirm the required RS232, RS422 or RS485 wiring mode, application settings and operating-system support before installation.

Does it require drivers or software?

Drivers support the listed Windows and Windows Server versions; confirm compatibility with the serial application and connected equipment.

What is included in the package?

PCIe serial combo card, breakout cable, low-profile bracket, driver CD and instruction manual.

What is the key installation requirement?

Install the card in an available PCIe slot, fit the correct bracket, connect the breakout cable and configure each port for the required protocol.

Is it suitable for an Australian setup?

Yes. DeviceDeal supplies the Australian-market version; always confirm the available ports, power and system compatibility for your installation.

What warranty applies?

PEX4S232485 carries a StarTech.com limited lifetime manufacturer warranty, subject to the manufacturers terms and eligibility requirements.

Planning a broader setup? Browse the DeviceDeal buying guides. View the DeviceDeal product page.

(PEX4S232485)

Features & highlights

Why choose PEX4S232485?

?Four DB9 serial portsProvides a single-card solution for four external serial connections.

?Mixed protocol supportCombines two RS232 with two RS422/RS485-capable ports.

?Two- or four-wire RS485Supports common RS485 wiring modes for industrial equipment.

?460.8Kbps maximumSupports high-performance serial communication per port.

?256-byte FIFOHelps manage data flow across multiple simultaneous serial connections.

?Breakout cable includedMoves four DB9 connectors away from the card bracket to reduce crowding.

Compatibility reminder: Confirm the required RS232, RS422 or RS485 wiring mode, application settings and operating-system support before installation.

StarTech 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 PEX4S232485 product image

Technical specifications

PEX4S232485 specifications

Exact-model specifications for compatibility checking.

Warranty Information
Warranty	Lifetime
Hardware
Bus Type	PCI Express
Card Type	Standard Profile (LP bracket incl.)
Chipset ID	SystemBase - SB16C1052PCI
Interface	Serial
Port Style	Dongle (Included)
Ports	4
Performance
Data Bits	5, 6, 7, 8
FIFO	256 Bytes
Flow Control	None, Xon/Xoff, RTS/CTS
Max Baud Rate	460.8 Kbps
Parity	None, Odd, Even, Space, Mark
Serial Protocol	RS-232/422/485
Stop Bits	1, 1.5, 2
Supported Protocols	RS-232, RS-422, RS-485 2-wire / 4-wire
MTBF	85,288 hours
Connector(s)
Connector Type(s)	1 - PCI Express x1 Male
External Ports	4 - DB-9 (9 pin, D-Sub) Male
Software
OS Compatibility	Windows¨ 2000, XP, Vista, 7, 8, 8.1, 10; Windows Server¨ 2003, 2008 R2, 2012, 2016, 2019;
Special Notes / Requirements
System and Cable Requirements	Available PCI Express slot
Environmental
Humidity	20~80% RH
Operating Temperature	0°C to 100°C (32°F to 212°F)
Storage Temperature	0°C to 150°C (32°F to 302°F)
Physical Characteristics
Product Height	2.7 in [6.9 cm]
Product Length	5.3 in [13.4 cm]
Product Width	0.6 in [14 mm]
Weight of Product	2.4 oz [67.4 g]
Packaging Information
Package Height	1.6 in [41 mm]
Package Length	8.3 in [21 cm]
Package Width	5.7 in [14.6 cm]
Shipping (Package) Weight	13.8 oz [390 g]
What's in the Box
Included in Package	1 - PCI Express Serial Combo Card
Additional Items	1 - breakout cable; 1 - low-profile bracket; 1 - driver CD; 1 - instruction manual

Sources: supplied product file, DeviceDeal product page and official StarTech.com specifications. Product appearance and specifications may change; confirm critical deployment requirements before ordering.

SKU	PEX4S232485
Barcode #	65030849357
Brand	STARTECH
Shipping Weight	0.3900kg
Shipping Width	0.100m
Shipping Height	0.050m
Shipping Length	0.210m
Shipping Cubic	0.001050000m3

Manufacturer warranty

Lifetime

This Australian-version product is supplied by DeviceDeal and is covered by the official StarTech.com limited lifetime manufacturer warranty in Australia.

Keep your DeviceDeal tax invoice as proof of purchase.
Coverage is subject to StarTech.com warranty terms, eligibility and product assessment.
Warranty service does not replace rights that may apply under Australian Consumer Law.