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Discontinued

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

Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot

Product ID: PEX2S552LP

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  • Automated in-band software flow control using programmable Xon/Xoff in both directions
  • 128-byte deep FIFO per transmitter and receiver
  • Ships with half-height/low profile mounting bracket, includes optional standard profile bracket

The StarTech.com PEX2S552LP low profile/half-height PCI Express Serial Card turns a PCI Express slot into two RS232 (DB9) serial connections.

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 and up, and ships with a low profile/half-height bracket installed but includes an optional full profile bracket that lets you add two serial ports to virtually any computer (regardless of the case form factor).

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

Applications

  • 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
  • Any other serial or legacy devices
  • Used to control multiple surveillance / security cameras in a parking structure, office building, etc.
  • Standard ATM automated teller machines to control keypads, receipt printer, card readers / card swipes, touchscreen LCD's, camera control, etc.
  • Self service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers
  • 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

The StarTech.com Advantage

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

Partner Numbers

  • UPC 065030837163

Compatibility

  • Windows 8 logo
  • Linux logo
  • Windows 7 logo
Windows® 8 (32/64bit), 7 (32/64), Vista(32/64), XP(32/64), XP Embedded, POS Ready 2009, Embedded System 2009, CE 5.0/6.0, 2000, 98SE, 95, DOS
Windows® Server 2008 R2, 2003(32/64)
Mac OS 10.4 and up
Linux

Specifications

Warranty Information Warranty Lifetime
Connector(s) 1 - Connector Type(s) PCI Express x1
1 - Internal Ports LP4 (4 pin; Large Drive Power)
2 - External Ports DB-9 (9 pin, D-Sub)
Environmental Operating Temperature -20°C to 85°C (-4deg;F to 185°F)
Storage Temperature -40°C to 85°C (-40deg;F to 185°F)
Humidity 5~85% RH
Hardware Ports 2
Interface Serial
Bus Type PCI Express
Card Type Low Profile (SP bracket incl.)
Port Style Integrated on Card
Chipset ID ASIX - MCS9901CV-CC
Packaging Information Package Length 8.3 in [21 cm]
Package Width 5.5 in [14 cm]
Package Height 1.6 in [40 mm]
Shipping (Package) Weight 7.4 oz [210 g]
Performance Maximum Data Transfer Rate Up to 460 Kbps
Serial Protocol RS-232
Physical Characteristics Product Length 4.1 in [10.5 cm]
Product Width 3.1 in [80 mm]
Product Height 0.8 in [20 mm]
Weight of Product 2.2 oz [63.5 g]
Software OS Compatibility Windows® 8 (32/64bit), 7 (32/64), Vista(32/64), XP(32/64), XP Embedded, POS Ready 2009, Embedded System 2009, CE 5.0/6.0, 2000, 98SE, 95, DOS
Windows® Server 2008 R2, 2003(32/64)
Mac OS 10.4 and up
Linux
Microsoft WHQL Certified Yes
What's in the Box 1 - Included in Package 2 Port PCI-Express RS-232 Serial Card
Full Profile Bracket
Driver CD
Instruction Manual

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Drivers/Downloads

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Driver(s):

Manual(s):

Datasheet

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Frequently Asked Questions

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:

  • 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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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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