User Manual

Quick-Start Guide
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Manual Revision: October 31, 2019
Product Diagram (PEX4S953 and PEX4S953LP)
Port Function
1 Break-out Cable Port
Connect the 4-Port DB9 Break-out Cable to connect
up to 4 Serial Devices
2 Stand-os
Attach the Bracket to the PCI Express Serial Card
Secure the 4-Port DB9 Break-out Cable to the
Break-out Cable Port
3 Bracket Attach the PCI Express Serial Card to the Computer
4
PCI Express Bus
Connector
Connect the PCI Express Serial Card to the
Computer Motherboard
5 Jumpers
Congure the individual Serial Connector power
settings
6 LP4 Power Connector Used to connect an LP4 Power Source
4-Port PCI Express RS232 Serial Card - 16950 UART
Requirements
For the latest requirements please visit:
www.startech.com/PEX4S953 - or - www.startech.com/PEX4S953LP.
PCIe Slot
Needle-Nose Pliers
(Optional) LP4 Power Source
Installation
WARNING!
PCI Express Serial Cards can be severely damaged by static electricity. Make sure
that you are properly grounded before you open the 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 Conguration
Note: This PCI Express Serial Card is specially designed to allow for power output
from the ninth pin of the Serial Connector(s) for Serial Devices that support power
over serial. Jumper conguration is a requirement when connecting Serial Devices
that require power through a Serial Connector.
The Jumper can be moved into one of three dierent positions in order to set the
power output voltage for the Serial Connector. The default setting for the Jumpers
is RI, no power. The LP4 Power Connector must be connected after conguring the
Jumper to 5V or 12V of power. To congure the Jumper, complete the following:
1. Ensure the Computer Power is O.
2. Locate the Jumper for Port One and carefully remove the Jumper. Lift the Jumper
straight up and o of the PCI Express Serial Card.
Notes: The Jumper is located on the right hand side, labeled as Port 1 on the
Printed Circuit Board.
Always hold the Card by the edges.
3. Determine the power setting that is required for Port One.
4. Position the Jumper over the set of Pins that correspond with the desired Serial
Connector Power Setting. See Figure 1 to determine where the Jumper should be
positioned.
1
4
6
3
5
2

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