Are you in the United States?
Visit our U.S.A. & International site for relevant pricing, distribution and product availability information.
Go to StarTech.com1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
Add a high-speed RS-232 Serial port to your laptop computer via an ExpressCard expansion slot
Product ID: EC1S952
- Supports high performance 16C950 UART with baud rates up to 115.2Kbps and backwards compatible with 16C550 UART
- ExpressCard 34mm and 54mm (with included adapter) Form Factor
- Single chip design optimizes speed, reliability and power
- Fully compliant with Express Card 1.0 Specifications
- Supports ASPM (L0S, L1) Link power management
- Automated in & out-of-band flow control
- Advanced FIFO fill management
Volume Order? Request a quote
Reseller Pricing: Create an Account
Overview
The EC1S952 1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART lets you add an RS232 serial port to your laptop or ExpressCard-equipped desktop computer.
The serial ExpressCard is designed based on a single-chip architecture (as opposed to cards that use a "bridge chip"), providing native PCI Express communication for greater performance and reliability by reducing the CPU load by up to 48%, and lowering power consumption.
An included stabilizer bracket allows the EC1S952 to fit snugly in both 34mm and 54mm ExpressCard slots. Providing optimal communication with RS232 serial devices, this ExpressCard serial card supports baud rates of up to 115.2Kbps and features a 128-byte FIFO buffer, plus a high performance 16C950 UART.
Backed by a StarTech.com lifetime warranty and free lifetime technical support.
The StarTech.com Advantage
- The high performing single chip design optimizes speed, reliability, and power while reducing CPU load by as much as 48%
- Compatible with both 34mm and 54mm ExpressCard slots; includes a slot spacer for greater security while installed in 54mm slots
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
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
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
Embedded system coding, building, and diagnostics
Technical Specifications
Product Numbers | ||
---|---|---|
Dell Harmony | A3412514 | |
Ingram Micro Canada | 14420L | |
Tech Data Canada | 20073R | |
Synnex Canada | 4460929 | |
ASI Distribution Canada | 84300 | |
DandH Canada | EC1S952CN | |
UPC Code | 065030834926 |
Warranty Information | ||
---|---|---|
Warranty | Lifetime | |
Hardware | ||
Bus Type | ExpressCard | |
Card Type | 34mm ExpressCard | |
Chipset ID | PLX/Oxford - OXPCIe952 | |
Interface | Serial | |
Port Style | Integrated on Card | |
Ports | 1 | |
Performance | ||
FIFO | 128 Bytes | |
Max Baud Rate | 115.2 Kbps | |
Serial Protocol | RS-232 | |
Connector(s) | ||
Connector Type(s) | 1 - ExpressCard (34mm) | |
External Ports | 1 - DB-9 (9 pin, D-Sub) Male | |
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 |
|
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 | 4.5 in [115 mm] | |
Product Weight | 1.2 oz [34 g] | |
Product Width | 1.8 in [45 mm] | |
Packaging Information | ||
Shipping (Package) Weight | 0.5 lb [0.2 kg] | |
What's in the Box | ||
Included in Package | 1 - ExpressCard to Serial Adapter | |
1 - 34 to 54mm slot spacer | ||
1 - Driver CD | ||
1 - Instruction Manual |
Compatibility





Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Linux 2.4.x to 4.4.x LTS Versions only
Related Products
1 Port PCI Express Dual Profile Parallel Adapter Card - SPP/EPP/ECP
Add a parallel port to your desktop computer through a PCI Express slot; features both standard and half-height mounting brackets
3821+ In stock
In stock
CA: 81 | US: 3740
In stock
Learn More
2 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
Add 2 RS-232 serial ports to your full height or low profile computer through a PCI Express slot
1587+ In stock
In stock
CA: 49 | US: 1538
In stock
Learn More
4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
Add four RS232 serial ports to any PC using a single PCI Express expansion slot
319+ In stock
In stock
CA: 12 | US: 307
In stock
Learn More
8 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
Add 8 RS232 serial ports to your computer via a single PCI Express slot
190+ In stock
In stock
CA: 37 | US: 153
In stock
Learn More
2 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
Add 2 high-speed RS-232 Serial ports to your notebook computer via an ExpressCard slot
Accessories
6 ft RJ45 to DB9 Cisco Console Management Router Cable - M/F
Connect your computer's serial port to the RJ45 console port on your Cisco router
10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M
Connect your serial devices, and transfer your files
DB9 RS232 Serial Null Modem Adapter - F/F
Cost-effective way of converting a straight through cable into a null modem cable
DB9 RS232 Serial Null Modem Adapter - M/F
Cost-effective way of converting a straight through cable into a null modem cable
Product Support
Drivers & Downloads
Driver(s):
-
[OxfordPCIe] Serial and Parallel Cards.zip
Serial Version: 1.03.0000.02
Parallel Version: 1.00.0000.05
Manual(s):
-
ECxS952.pdf
English
Compliance Letter(s):
Data Sheet(s)
- EC1S952_Datasheet.pdf
English
Frequently Asked Questions
Installation
Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).
- 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).
- After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
- Press the Windows key + R, type devmgmt.msc, and press Enter to open the Device Manager.
- Right-click PCI Serial Port, which will have a “!” or “?” next to it to indicate a driver issue.
- Click Update Driver.
- Click Browse my computer for driver software.
- Select the Let me pick from a list of device drivers on my computer option.
- 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.
- Select the Have Disk option.
- Browse to the Windows folder, select the folder for your operating system, 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.
- Click the OxMf or OxPCIeMf file. Click OK, and then click Next.
Note: If you are using a serial card that uses the OxPCIeMf file and installation fails, repeat steps 4 to 9, then browse to the Windows folder. Browse to the Serial Port Driver folder and click the oxserleg file. Click OK, and then click Next.
Copy Link
Was this information helpful? Yes No
Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).
- 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).
- After the download is complete, right-click the zip folder that you downloaded, click Extract All, and complete the instructions.
- Press the Windows key + R, type devmgmt.msc, and press Enter to open the Device Manager.
- Right-click PCI Serial Port, which will have “!” or “?” next to it to indicate a driver issue.
- Click Update Driver.
- On the Hardware Update Wizard screen, click Install from a list or specific location (Advanced), and then click Next.
- Select the Don’t search, I will choose the driver to install option, and then click Next.
- 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.
- On the Select the Device Driver you want to install for this hardware screen, select the Have Disk option.
- In the Install from Disk dialog box, click Browse.
- Browse to the Windows folder, select the folder for your operating system, 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.
- Click the OxMf or OxPCIeMf file. Click OK, and then click Next.
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.
Copy Link
Was this information helpful? Yes No
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 you do not see the COM port number in Device Manager see this FAQ for PCI/PCIe expansion cards: https://www.startech.com/support/faqs/technical-support?topic=expansion-cards#pci-pcie-cannot-boot-os-or-detect-windows
or this FAQ for USB devices: https://www.startech.com/support/faqs/technical-support?topic=expansion-cards#usb-cannot-detect-windows -
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
Copy Link
Was this information helpful? Yes No
To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:
- 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.
- 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.
- 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.
- 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.
For products related to this article, click here.
Copy Link
Was this information helpful? Yes No
* Product appearance and specifications are subject to change without notice.
Customer Reviews
4 (1 reviews)4 out of 5 stars
Quality of Product
Tell us what you think of this product.
Need a little help getting started? Check out our review guidelines.

1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
Product ID: EC1S952
Follow us on Twitter | Find us on Google+