StarTech.com PEX4S232485 Quick Start Manual

4 Port (2 x RS232, 2 x RS422/485) PCIe Serial Card
Product ID
PEX4S232485
1
Port/LED/Connector
1 DB9 Serial Ports (x 4) • Connect Serial Peripheral Devices
• Connects the Breakout Cable to the PCIe Serial
Card
2
DB44 Port
• Use the Side Screws to secure the Breakout Cable
to the Bracket
• Secures the card to the Host Computer Case
3 • The Full Profile Bracket comes pre-installed
Bracket
• The Low Profile Bracket is included
PCIe 2.0 x1 • Insert into a PCI Express Slot on the Host
4
Computer
Connector
• Used in combination with J3 and J4 Jumpers
5 Port 3 and 4 Jumpers • Switches the Serial Mode of Ports 3 and 4 between
RS422 and RS485 2 and 4 Wire
• Used in combination with the Port 3 and 4 Jumpers
6
J3 and J4 Jumpers • Switches the Serial Mode of Ports 3 and 4 between
RS422 and RS485 2 and 4 Wire
2
3
5
4
*Product may vary from image
Function
For additional self-service support options and community forums, please visit: www.StarTech.com/support
Package Contents
• PCI Express Serial Combo Card x 1
• Breakout Cable x 1
• Low Profile Bracket x 1
• Instruction Manual x 1
Requirements
For the latest requirements, please visit:
• Computer with an available PCI Express Slot (x1, x4, x8, or x16)
6
Installation
WARNING!
Static electricity can cause severe damage to PCI Express cards. Ensure proper grounding
before opening the computer case or touching the PCI Express card. Use an Anti-Static Strap
when installing any computer component. If an Anti-Static Strap is not available, discharge
built-up static electricity by touching a large grounded metal surface for several seconds.
Handle the PCI Express card by its edges, avoiding contact with the gold connectors.
Jumper Settings
To change the Serial Ports 3 and 4 between RS-422 or RS-485 2 and 4 Wire, change the
respective Jumpers as shown below.
www.StarTech.com/PEX4S232485
422 Mode
Port 3 and 4 Jumpers J3 and J4 Jumpers
3, 4
485 Mode (4 Wire)
Port 3 and 4 Jumpers J3 and J4 Jumpers
3, 4
485 Mode (2 Wire)
Port 3 and 4 Jumpers J3 and J4 Jumpers
3, 4
Quick-Start Guide
J4
J3
J4
J3
J4
J3
Manual Revision: July 11, 2024