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

Add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot

Product ID: PEX4S232485

5 stars (1 reviews) |
  • 4 port (2 x RS232, 2 x RS422/485) serial combo card
  • RS232 data transfer rates up to 460 Kbps
  • Supports 2-Wire / 4-Wire RS485 modes
Your price
$217.99CAD

In stock: CA: 2 | US: 227

Where to buy StarTech.com products
Where to buy

The PEX4S232485 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 lets you add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot.

This PCI express serial card is a single card solution that is compatible with nearly any serial communication protocol, supporting RS-232, RS-422, RS-485 2-wire or RS-485 4-wire operating modes.

A flexible solution for adding serial ports to full-sized, or small form factor systems, the 4-port serial card includes both low and full profile brackets while the included breakout cable helps to avoid cluttered connections.

Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Applications

  • Monitor and control industrial machines on an assembly line or in a production environment
  • POS retail applications in grocery stores, and any other retail store to control keyboards, cash drawers, receipt printers, card readers/card swipes, scales, and elevated displays on poles
  • Bank teller workstations in either full profile or low profile versions to control their serial devices such as cash drawers, card readers / card swipes, printers, keypads / pinpads, pen pads
  • Self-service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers

The StarTech.com Advantage

  • This single PCI Express combo card is compatible with any serial device protocol (RS232, RS422, and RS485), allowing for communication with multiple devices over mixed protocols
  • Includes both low profile/half-height and full profile brackets to ensure fitment into a broad range of system form factors
  • The included breakout cable saves expense as an all-in-one solution, and allows the addition of multiple serial ports through a single PCI Express slot

Partner Numbers

  • Ingram Micro Canada 31770T
  • ASI Distribution Canada 133367
  • D&H Canada PEX4S232485CA
  • UPC 065030849357

Compatibility

  • Windows 8 logo
  • Windows 7 logo
  • Windows Server 2012 logo
  • Windows 10 logo
  • Windows Server 2016 logo
  • Windows Server 2019 logo
Windows® 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016, 2019

Specifications

Warranty Information Warranty Lifetime
Connector(s) Connector Type(s) 1 - PCI Express x1
External Ports 4 - DB-9 (9 pin, D-Sub)
Environmental Operating Temperature 0°C to 100°C (32°F to 212°F)
Storage Temperature 0°C to 150°C (32°F to 302°F)
Humidity 20~80% RH
Hardware Ports 4
Interface Serial
Bus Type PCI Express
Card Type Standard Profile (LP bracket incl.)
Port Style Dongle (Included)
Chipset ID SystemBase - SB16C1052PCI
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 0.9 lb [0.4 kg]
Performance Serial Protocol RS-232/422/485
Max Baud Rate 460.8 Kbps
Data Bits 5, 6, 7, 8
FIFO 256 Bytes
Flow Control None, Xon/Xoff, RTS/CTS
Parity None, Odd, Even, Space, Mark
Stop Bits 1, 1.5, 2
MTBF 85,288 hours
Supported Protocols RS-232, RS-422, RS-485 2-wire / 4-wire
Physical Characteristics Material Steel
Product Length 5.3 in [13.4 cm]
Product Width 0.6 in [14 mm]
Product Height 2.7 in [6.9 cm]
Weight of Product 2.4 oz [67.4 g]
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
What's in the Box Included in Package 1 - PCI Express Serial Combo Card
1 - Breakout Cable
1 - Low Profile Bracket
1 - Driver CD
1 - Instruction Manual

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Drivers/Downloads

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Manual(s):

Datasheet

Product Support

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Frequently Asked Questions

Troubleshooting

Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.

When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Serial cables

  • Serial ports

  • Serial devices

To test your setup components, try the following:

  • Use the serial cable, serial port, and serial device in another setup to see if the problem is with the components or the setup.

  • Use a different serial cable, serial port, and serial device in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

When you test the serial ports and serial device, it is recommended that you do the following:

  • Press the Windows key + R, type devmgmt.msc, and press Enter to open Device Manager. Check to see if your device is listed under Ports (COM & LPT).

  • Make sure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number. 

  • If the device is listed with an error, follow the instructions on the website to reinstall the drivers.

Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.

To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:

  1. If your serial port is not female, convert it by taking a female/female cable or gender changer and plugging it into the serial port.
  2. Take a metal paperclip or wire and cross pins 2 and 3. If you look closely at the female end, the pins should be numbered.
  3. Open a telnet session on the COM port number of the device that you are testing. To find out the COM port number, refer to the following FAQ: https://www.startech.com/faq/com-port-listing-windows.

Note: To open a telnet session on the COM port, you need a telnet client like PuTTY or Hyper Terminal. Windows XP comes with Hyper Terminal.

  1. When the session is open, anything you type into it you should see. The loopback test fails when you cannot see what you are typing.

If the loopback test fails, make sure that the serial cable or gender changer that you are using works and that the adapter is in the correct port. 

You can check multiple ports at the same time by opening multiple sessions, putting the loopback adapter on one port, and trying to type into each session.  When you can see what you are typing, you know that the COM port is working and you can see which port number the physical serial port is. Close the window for the port that you just tested to speed up the testing of the remaining serial ports.

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Installation

Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).

  1. Download the latest drivers from the StarTech.com website at www.startech.com/Support. The part number and product ID are on the product packaging.

Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).

  1. After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
  2. Press the Windows key + R, type devmgmt.msc, and press Enter to open the Device Manager.
  3. Right-click PCI Serial Port, which will have “!” or “?” next to it to indicate a driver issue.
  4. Click Update Driver.
  5. On the Hardware Update Wizard screen, click Install from a list or specific location (Advanced), and then click Next.
  6. Select the Don’t search, I will choose the driver to install option, and then click Next.
  7. On the Hardware Type screen, click Show All Devices, and then click Next.

Note: The Hardware Type screen does not appear on all systems. If you do not see this screen, skip this step.

  1. On the Select the Device Driver you want to install for this hardware screen, select the Have Disk option.
  2. In the Install from Disk dialog box, click Browse.
  3. Browse to the Windows folder and open the 32-bit or the 64-bit folder, depending on your system type.

Note: To view your system type, click Start. Right-click Computer, and then click Properties.

  1. Click the sbserial.inf file. Click OK, and then click Next. Additional device listings will appear in Device Manager.
  2. Complete steps 4 to 12 for each of the new device listings.

Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).

  1. Download the latest drivers from the StarTech.com website at www.startech.com/Support. The part number and product ID are on the product packaging.

Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).

  1. After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
  2. Press the Windows key + R, type devmgmt.msc, and press Enter to open the Device Manager.
  3. Right-click PCI Serial Port, which will have a “!” or “?” next to it to indicate a driver issue.
  4. Click Update Driver.
  5. Click Browse my computer for driver software.
  6. Select the Let me pick from a list of device drivers on my computer option.
  7. On the Select your device’s type from the list below screen, click Show All Devices, and click Next.

Note: The Select your device’s type from the list below screen does not appear on all systems. If you do not see this screen, skip this step.

  1. Select the Have Disk option.
  2. Browse to the Windows folder and open the 32-bit or the 64-bit folder, depending on your system type.

Note: To view your system type, click Start. Right-click Computer, and then click Properties.

  1. Click the sbserial.inf file. Click OK, and then click Next. Additional device listings will appear in Device Manager.
  2. Complete steps 4 to 11 for each of the new device listings.

Before you install this device, make sure that your operating system is current (for example, the most recent service pack is installed).

  1. Download the latest drivers from the StarTech.com website at www.startech.com/Downloads. The part number and product ID are on the product packaging.

Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).

  1. After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
  2. In the list of extracted files, right-click the Setup.exe file and click Run as Administrator.

Note: If the Run as Administrator option is not available, you might be trying to run the installer from within the zipped file. Complete the instructions in step 2 to extract the files.

  1. Complete the instructions to install the device drivers, and restart your computer when prompted to.
  2. After your computer restarts, connect the fax modem to your computer.

Your computer automatically finishes installing the driver and your device should be ready to use.

Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).

  1. Download the latest drivers from the StarTech.com website at www.startech.com/Downloads. The part number and product ID are on the product packaging.

Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).

  1. After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
  2. In the list of extracted files, double-click the Setup.exe file.
  3. Complete the instructions to install the device drivers, and restart your computer when prompted to.

Your computer automatically finishes installing the driver and your device should be ready to use.

How To

To confirm that Windows detects your expansion card, complete the following:

  1. Press the Windows key+R, type devmgmt.msc, and press Enter.
  2. In Device Manager, under the appropriate heading, confirm that your expansion card is listed and that there isn't an exclamation mark next to it.  For example, a USB controller card would be under Universal Serial Bus controllers.

Your expansion card is listed according to the name of the chipset. To determine the name of the chipset of your expansion card, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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