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FCC Compliance Statement

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 instruc-
tions, 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.

• 

Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols

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 acknowl-
edges 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.

Technical Support

StarTech.com’s lifetime technical support is an integral part of our commit-ment 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.

Warranty Information

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.

Limitation of Liability

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.

Please note: This card supports optional auto echo mode. 
If enabled, data sent to the RS-485 transmitter will be 
mirrored and simultaneously sent to the receiver, allowing 
the echoed data to be verified for collisions and resent if 
necessary.

Please note: This card supports 4-wire RS-422 mode. 
In this mode, data is sent and received independently. As 
such, cross-over, twisted pair cable is required.

RS-485 (Transmitter is controlled automatically by ATTATM 
Hardware)

RS-422

Specifications

PCI2S485LP

PCI2S485LP15

Bus Interface

PCI (5V) / PCI-X (3.3V)

Chipset

Moschip MCS9835CV

Number of Ports

1 x DB15F

2 x DB9M (via DB15 to DB9 

breakout cable)

Max Data Transfer Rate

115.2 Kbps

Bits Data Framing Support

5/6/7/8/9

Supported Operating Systems

Windows

®

 2000/XP/Vista, 

Linux

®

Wiring Configuration

4-Wire Twisted

Pair Cable

2-Wire Twisted

Pair Cable

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