
Serial ExpressCard
EC4S950
Instruction Manual
Actual product may vary from photo
4 port 16C950 Serial ExpressCard

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This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
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This manual may make reference to trademarks, registered trademarks, and other protected names
and/or symbols of third-party companies not related in any way to StarTech.com. Where they occur
these references are for illustrative purposes only and do not represent an endorsement of a
product or service by StarTech.com, or an endorsement of the product(s) to which this manual
applies by the third-party company in question. Regardless of any direct acknowledgement
elsewhere in the body of this document, StarTech.com hereby acknowledges that all trademarks,
registered trademarks, service marks, and other protected names and/or symbols contained in this
manual and related documents are the property of their respective holders.

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safely removing the ExpressCard . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Accessory Products from StarTech.com . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Instruction Manual
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Instruction Manual
Introduction
Thank you for purchasing a StarTech.com 16C950 Serial ExpressCard. Now you can
connect standard serial devices to any computer with an available ExpressCard slot;
providing data transfer rates of up to 921Kbps, this is the perfect solution for connecting
serial peripherals such as POS devices, PDAs, digital cameras, printers, ISDN terminal
adapters and more.
Features
•
High Performance 16C950 UART with maximum data transfer rates up to 921.6 kbps
•
Automated out-of-band ow control
•
128-byte deep FIFO per transmitter and receiver
Automated in-band software ow control using programmable Xon/Xo in both
•
directions
Before you begin
System requirements:
A computer with an available ExpressCard slot (Please see Accessory Products
•
from StarTech.com if you wish to use this ExpressCard with a desktop computer).
•
Operating system requirements: Windows® 8 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64), 2000,
Windows Server® 2003 (32/64)
Package contents:
This package should contain:
•
1 x Serial RS-232 ExpressCard
•
1 x 4-Port DB9 Hub with Adapter Cable
•
1 x Instruction Manual
•
1 x Driver CD
1

Instruction Manual
2
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1. The driver files for Windows are shipped in a .zip format (eg. V409HS.zip). Please
copy the files to your hard drive and unzip them, before proceeding with installation.
15-pin
Connector
Por t 1
Por t 2
Por t 3
Por t 4
Expansion Unit
Caution: It is advisable to remove all possible static discharge potential
from any objects that the ExpressCard may come in contact with before
installation. This can be accomplished by touching a grounded metal object,
prior to insertion.
Warning: Please do not remove the 15-pin cable when the ExpressCard is
inserted in the ExpressCard slot and the host computer is powered. The 15pin connector is not designed to support hot-plugging, so it cannot be
disconnected while the system is running. The hot-plug feature is only
supported by the ExpressCard connector and the Notebook’s ExpressCard
slot.
Driver files can be
found here
2. Connect the 15-pin cable of the Expansion Unit to the ExpressCard.
3. Insert the ExpressCard into an unused ExpressCard slot on the host computer. This
will launch the Add New Hardware Wizard. Click on Next.
4. Select Install from a list or specific location (Advanced) and click Next.
5. Select Include this location in the search, then click on Browse to specify the exact
file location (E:\IO\OXFORD\NT4 etc.) and click Next to continue. Please note that if
the exact file is not selected, an installation conflict could occur. Please pay particular
Please note: When installing the software
for EC4S950, ensure that you browse to the
correct operating system folder. Allowing
Windows to search for the file may result in
the incorrect file being installed, as the Driver
CD contains several versions of the
necessary software.

Instruction Manual
3
attention to the folder name, when browsing to the destination file.
6. Click Next to continue and click Finish to complete the installation.
7. Right-click on the My Computer icon, and select Manage. Choose Device Manager
(in the left pane), and double-click on Ports (in the right pane).
8. Right-click on one of the newly added ports, and choose Properties. Click on the
Data rate tab, then click on Detect Crystal Frequency. Click OK to save this setting.
9. Repeat step 9 for each added port.
10. Serial devices can be connected, once the preceding steps are complete.
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Please note that in Windows XP and 2000, when the ExpressCard is connected to the
host computer, an icon (depicted below) will appear in the taskbar (normally the bottom
right-hand corner of the screen, near the clock). To ensure safe removal of the
ExpressCard, please click on this icon, select Stop, click OK and then Close, after which
you can safely remove the ExpressCard from the host computer.

Instruction Manual
Specifications
Certications ROHS, FCC, CE
Bus Type ExpressCard
Form Factor 34mm
Connectors
Maximum Data Transfer Rate 921 Kbps
OS Support
4 x DB9 Male
1 x 15 pin to four DB9 ports
Windows® 8 (32/64bit), 7 (32/64),
Vista (32/64), XP (32/64), 2000,
Windows Server® 2003 (32/64)
Accessory Products from StarTech.com
Contact your local StarTech.com dealer or visit www.startech.com for cables or other
accessories that will help you get the best performance out of your new product.
MC3MF
3 ft. AT Modem Cable DB9F-DB25M
MC6MF
6 ft. AT Modem Cable (male to female)
MXT100_25
25 ft. 9-pin Straight Through Cable (male to female)
AT925FF
Adapter DB9F to DB25F
AT925FM
Adapter DB9F to DB25M
PEX2EC
PCI-Express to ExpressCard Adapter
4

Instruction Manual
5
TTeecchhnniiccaall SSuuppppoorrtt
StarTech.com’s lifetime technical support is an integral part of our commitment to provide
industry-leading solutions. If you ever need help with your product, visit
www.startech.com/support and access our comprehensive selection of online tools,
documentation, and downloads.
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This product is backed by a lifetime warranty. In addition, StarTech.com warrants its
products against defects in materials and workmanship for the periods noted, following
the initial date of purchase. During this period, the products may be returned for repair, or
replacement with equivalent products at our discretion. The warranty covers parts and
labor costs only. StarTech.com does not warrant its products from defects or damages
arising from misuse, abuse, alteration, or normal wear and tear.
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In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their
officers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of profits, loss of business,
or any pecuniary loss, arising out of or related to the use of the product exceed the
actual price paid for the product. Some states do not allow the exclusion or limitation of
incidental or consequential damages. If such laws apply, the limitations or exclusions
contained in this statement may not apply to you.

8 August 2007 (Rev. A)
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