StarTech.com

1 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART

Add a RS-232 serial port to your standard or small form factor computer through a PCI Express expansion slot

Product ID: PEX1S553LP

  • One high speed RS232 serial port with data transfer rate up to 460.8 Kbps
  • Ships with half-height/low profile mounting bracket, includes standard bracket
  • Selectable power output on pin 9 for the serial port
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  • Native single-chip, single lane PCI Express
  • Single chip design optimizes speed and reliability
  • Compliant with PCI Express base specifications revision 1.1a
  • Automated out-of-band flow control using CTS/RTS and DSR/DTR
  • Automated in-band software flow control using programmable Xon/Xoff in both directions
  • 128-byte deep FIFO per transmitter and receiver
$77.99 AUD exc GST
$85.79 AUD inc GST
Not Available
May be in stock with partners
Where To Buy

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Overview

The PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection.

The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards.

The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 to 4.11.x, and ships with a low profile/half-height bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).

This product is a replacement for our PEX1S552LP card.

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

The StarTech.com Advantage

  • Native single-Chip, single lane PCI Express; 48% less cpu load, and increased performance
  • Pre-configured for low profile/half-height systems but includes a full profile bracket for versatility
  • Easy to install and use with full step-by-step instructions saving time and hassle

Applications

Self service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers

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

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

Standard ATM automated teller machines to control keypads, receipt printer, card readers / card swipes, touchscreen LCD's, camera control, etc.

Used to control multiple surveillance / security cameras in a parking structure, office building, etc.

Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Bus Type PCI Express
Card Type Low Profile (SP bracket incl.)
Chipset ID ASIX - MCS9922CV-AA
Interface Serial
Port Style Integrated on Card
Ports 1
Performance
FIFO 128 Bytes
Max Baud Rate 460.8 Kbps
Serial Protocol RS-232
Connector(s)
Connector Type(s) 1 - PCI Express x1 Male
External Ports 1 - DB-9 (9 pin, D-Sub) Male
Internal Ports 1 - LP4 (4 pin, Molex Large Drive Power) Male
Software
Microsoft WHQL Certified Yes
OS Compatibility Windows® DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Mac OS X® 10.4 to 10.10
Linux kernel 2.6.x to 4.11.x LTS Versions only
Environmental
Humidity 5~85% RH
Operating Temperature -10°C to 80°C (14°F to 176°F)
Storage Temperature -20°C to 100°C (-4°F to 212°F)
Physical Characteristics
Product Height 0.8 in [20 mm]
Product Length 4.1 in [105 mm]
Product Weight 1.8 oz [51.5 g]
Product Width 3.1 in [80 mm]
Packaging Information
Shipping (Package) Weight 0.4 lb [0.2 kg]
What's in the Box
Included in Package 1 - 1 Port PCI-Express Serial Card
1 - Full Profile Bracket
1 - Driver CD
1 - Instruction Manual

Compatibility

View full OS compatibility
Windows® DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Mac OS X® 10.4 to 10.10
Linux kernel 2.6.x to 4.11.x LTS Versions only

Certifications

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Accessories

Product Support

Drivers & Downloads

Driver(s):
Manual(s):
Data Sheet(s)

Frequently Asked Questions

Before You Buy

Serial cards derive power from the PCI or PCI Express slot on the motherboard. When you power serial devices from the serial card ports, the power provided by the slot may not be enough to power all of the devices and you should connect additional sources of power from the power supply. When you troubleshoot issues, you should connect an additional source of power.

Some signs that you are experiencing power-related issues include certain devices not working correctly, not all of the devices working at the same time, and certain devices not working at all.

Installation

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

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

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. Select the appropriate folder for your operating system.
  3. Right-click Setup.exe. 
  4. Click Run as Administrator.

Note: If the Run as Administrator option is not available, you might be attempting to run the installer from within the zipped file. Extract the files using the instructions in Step 2.

  1. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  2. Your computer will automatically complete the driver installation and your device should be ready to use.

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

Note: Windows will typically save 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. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. Select the appropriate folder for your operating system.
  3. Double-click Setup.exe.
  4. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  5. Your computer will automatically complete the driver installation 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 http://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 Drivers folder and open the 32-bit or the 64-bit folder, depending on your system type.

Note: To view your system type, press Windows key + R, type control /name microsoft.system, and press Enter.

  1. Click the StnMF file or the NmXpMf file (only one of the file names is displayed). Click OK, and then click Next.
  2. The COM ports are listed in Device Manager under Ports (COM & LPT). Repeat steps 4 to 11 for each of the COM ports, selecting the StnPorts file or the NmPorts file in step 11.

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 http://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 Drivers folder and open the 32-bit or the 64-bit folder, depending on your system type.

Note: To view your system type, press Windows key + R, type control /name microsoft.system, and press Enter.

  1. Click the StnMF file or the NmXpMf file (only one of the file names is displayed). Click OK, and then click Next.
  2. The COM ports are listed in Device Manager under Ports (COM & LPT). Repeat steps 4 to 11 for each of the COM ports, selecting the StnPorts file or the NmPorts file in step 11.

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.

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

  1. Click the Apple icon.
  2. Click About This Mac.
  3. Click More Info or System Report.
  4. Under the appropriate heading, confirm that your expansion card is listed and that there isn't an error. For example, a network card would be under Ethernet Cards.

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.

Troubleshooting

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:

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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