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Quick-Start Guide

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Manual Revision: February 7, 2019 10:23 AM

Product Diagram (PEX1S953LP)

Port

Function 

1

Serial Port

•  Used to connect a Serial Device

2

Screws

•  Used to attach the Serial Port to the Bracket

•  Used to secure a Serial Cable to the Serial Port

3

Bracket

•  Used to attach the Card to your Computer

4

PCI Express Bus 

Connector

•  Used to connect the PCI Express Serial Card to 

your Computer’s Motherboard

5

Jumper

•  Used to configure Serial Port power settings

6

Printed Circuit Board

•  Components such as Jumpers are located on 

this Board

7

LP4 Power Connector

•  Used to connect a Power Source

1-Port PCI Express Serial Card with 16950 UART - Low-Profile

Requirements

• PCIe Slot
• Needle-Nose Pliers

For the latest requirements and full manual, please visit  

www.startech.com/PEX1S953LP

Installation

WARNING!
PCI Express Serial Cards

 can be severely damaged by static electricity. Make sure 

that you are properly grounded before you open your 

Computer Case

 or touch the 

PCI Express Serial Card

. You should wear an 

Anti-Static Strap

 when you install any 

computer component. If an 

Anti-Static Strap

 isn’t available, discharge any built-up 

static electricity by touching a large 

Grounded Metal Surface

 for several seconds. Only 

handle the 

PCI Express Serial Card

 by its edges and don’t touch the gold connectors.

Jumper Configuration

Note: Jumper 

configuration is a requirement when connecting 

Serial Devices 

that 

require power through a 

Serial Port

This 

Jumper 

can be moved into one of three different positions in order to set the 

power output voltage for the 

Serial Port

. The default setting for the 

Jumpers

 is 

RI

which is the setting for no power. The 

Jumper 

can be moved to one of the other two 

settings for 

5V

 or 

12V

 of power. To configure the 

Jumper

, complete the following:

1.  Determine the power setting that is required for the 

Serial Port

.

2.  Locate the 

Jumper

. The 

Jumper

 is labeled as 

J1

 on the 

Printed Circuit Board

.

3.  Carefully remove the 

Jumper

. Lift the 

Jumper 

straight up and off of the 

PCI Express 

Serial Card

.

Note: 

Always hold the 

Card

 by the edges.

4.  Position the 

Jumper

 over the set of 

Pins

 that correspond with the desired 

Serial 

Port Power Setting

. See 

Figure 1

 to determine where the 

Jumper

 should be 

positioned.

5.  Push the 

Jumper

 straight down and into place.

Note: 

Push the

 Jumper 

all the way into position for proper contact.

1

4

7

5

6

2

3

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