Product ID: MPEX2S952
The MPEX2S952 2-port Mini PCI Express serial card turns a mini-PCIe slot into two RS232 (DB9) serial ports - a cost-saving solution for adding legacy serial support for embedded systems that aren't normally compatible.
The adapter card features a native PCI Express single chip design, which allows you to take advantage of full PCI Express capability by providing improved speed and reliability while reducing the load applied to the CPU by as much as 48% over conventional "bridge chip" serial cards .
Designed and constructed to provide long-lasting durability and reliability, the 2-Port Mini PCI Express RS232 Serial Card is backed by our Lifetime Warranty and free lifetime technical support.
|Connector(s)||1 - Connector Type(s)||Mini PCI Express x1 (52 pin)|
|2 - External Ports||DB-9 (9 pin, D-Sub)|
|Environmental||Operating Temperature||-10°C to 80°C (14°F to 176°F)|
|Storage Temperature||-20°C to 100°C (-4°F to 212°F)|
|Bus Type||Mini PCI Express|
|Port Style||Dongle (Included)|
|Chipset ID||PLX/Oxford - OXPCIe952|
|Packaging Information||Package Length||21.2 cm [8.4 in]|
|Package Width||38 mm [1.5 in]|
|Package Height||15 cm [5.9 in]|
|Shipping (Package) Weight||140 g [4.9 oz]|
|Max Baud Rate||460.8 Kbps|
|Data Bits||4, 5, 6, 7, 8|
|Flow Control||None, Xon/Xoff, RTS/CTS|
|Parity||None, Odd, Even, Space, Mark|
|Stop Bits||1, 1.5, 2|
|Product Length||50 mm [2.0 in]|
|Product Width||30 mm [1.2 in]|
|Product Height||1 cm [0.4 in]|
|Weight of Product||6 g [0.2 oz]|
|Software||OS Compatibility||Windows® CE 6.0 / 5.0, 95, 98SE, 2000, XP, XP Embedded, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Linux 2.4.x to 4.4.x LTS Versions only
|Microsoft WHQL Certified||Yes|
|What's in the Box||1 - Included in Package||2 Port Mini-PCIe Serial Card|
|LP4 to 6 pin power cable|
|2 - Included in Package||DB9 ribbon cable|
Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).
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).
Note: The Hardware Type screen does not appear on all systems. If you do not see this screen, skip this step.
Note: To view your system type, click Start. Right-click Computer, and then click Properties.
Note: If you are using a serial card that uses the OxPCIeMf file and installation fails, repeat steps 4 to 10, then browse to the Windows folder. Browse to the Serial Port Driver folder and click the oxserleg file. Click OK, and then click Next.
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:
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.
Perform a serial loopback test. See this FAQ on how to perform a RS-232 serial loopback test: http://www.startech.com/faq/serial_loopback_test_rs232_windows
To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:
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.
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.
For products related to this article, click here.
To confirm that Windows detects your expansion card, complete the following:
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.
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.