OSS OSS-BP-427 User manual

Expansion Backplane, 1 PCIe slot x16 3.0
Model: OSS-BP-427
www.onestopsystems.com
Installation Guide
SKU: OSS-BP-427

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Table of Contents
Preface 4
Advisories 4
Safety Instructions 5
1Introduction 7
1.1 Specifications 7
1.2 Overview 8
1.2.1 Connector Pinouts 9
1.3 Block Diagram 9
1.4 Dimensions 9
1.5 x16 Target Slot Connector Pin Outs 10
1.6 x16 End Point Slot Connector Pin Outs 11
2Hardware Requirements 14
2.1 Supported Configuration 14
2.2 Unsupported / Invalid Configuration 15
2.3 Hardware to Use 17
2.3.1 PCIe Slot & Motherboard Requirement 17
2.3.2 Host and Target Cards 17
2.3.3 x8 or x16 iPass Cable 18
2.3.4 Power Supply 19
2.4 Software Requirement 20
3Installation Procedures 21
3.1 Connect Power Supply 21
3.1.1 Plug-in External Power Brick 21
3.1.2 Standard ATX Power Supply 22
3.1.3 4pin-to-12V Adapter Cable 22
3.2 Install OSS Target 23
3.3 Install Host card 23
3.5 Install PCIe card 24
3.6 Connect iPass Cable 24
3.7 Connect Power Cord 25
3.8 Power ON the system 26
4Verify Hardware 27
4.1 x8 Target & Host Cards 27
4.1.2 x8 Card LEDs 27
4.1.3 LED Definition 27
4.2 x16 Target & Host Cards 28
4.2.1 x16 Card LEDs 28
4.2.2 Bracket LED Status indicators 28
5Troubleshooting 29
5.1 The OSS-427 board is not powering ON 29
5.2 Both Target and Host cards are not linking up 29

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5.3 The Red LED on the board stays LIT all the time. 29
5.4 My PCIe cards is not getting detected 29
6How to Get More Help 30
6.1 Contacting Technical Support 30
6.2 Returning Merchandise 30
6.3 Online Support Resources 30

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Preface
Advisories
Five types of advisories are used throughout this manual to provide helpful information, or to alert you to the potential for
hardware damage or personal injury.
NOTE
Used to amplify or explain a comment related to procedural steps or text.
IMPORTANT
Used to indicate an important piece of information or special “tip” to help you
CAUTION
Used to indicate and prevent the following procedure or step from causing damage to the equipment.
WARNING
Used to indicate and prevent the following step from causing injury.
DANGER or STOP
Used to indicate and prevent the following step from causing serious injury or significant data loss
Disclaimer: We have attempted to identify most situations that may pose a danger, warning, or caution condition in this manual.
However, the company does not claim to have covered all situations that might require the use of a Caution, Warning, or Danger
indicator.

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Safety Instructions
Always use caution when servicing any electrical component. Before handling the expansion chassis, read the following
instructions and safety guidelines to prevent damage to the product and to ensure your own personal safety. Refer to the
“Advisories” section for advisory conventions used in this manual, including the distinction between Danger, Warning, Caution,
Important, and Note.
Always use caution when handling/operating the computer. Only qualified, experienced, authorized electronics
personnel should access the interior of the computer and expansion chassis per UL and IEC 60950-1
The power supplies produce high voltages and energy hazards, which can cause bodily harm.
Use extreme caution when installing or removing components. Refer to the installation instructions in this manual for
precautions and procedures. If you have any questions, please contact Technical Support.
WARNING
Never modify or remove the radio frequency interference shielding from your workstation or expansion unit.
To do so may cause your installation to produce emissions that could interfere with other electronic equipment
in the area of your system.
When Working Inside a Computer
1. Before taking covers off a computer, perform the following steps:
2. Turn off the computer and any peripheral devices.
3. Disconnect the computer and peripheral power cords from their AC outlets or inlets in order to prevent electric shock or
system board damage.
In addition, take note of these safety guidelines when appropriate:
To help avoid possible damage to systems boards, wait five seconds after turning off the computer before removing a
component, removing a system board, or disconnecting a peripheral device from the computer.
When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a
connector with locking tabs. If you are disconnecting this type of cable, press in on the locking tabs before disconnecting
the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before
connecting a cable, make sure both connectors are correctly oriented and aligned.
CAUTION
Do not attempt to service the system yourself except as explained in this manual. Follow installation
instructions closely.

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Protecting Against Electrostatic Discharge
Electrostatic Discharge (ESD) Warning
Electrostatic Discharge (ESD) is the enemy of semiconductor devices. You should always take precautions to
eliminate any electrostatic charge from your body and clothing before touching any semiconductor device or
card by using an electrostatic wrist strap and/or rubber mat.
Static electricity can harm system boards. Perform service at an ESD workstation and follow proper ESD procedures to reduce the
risk of damage to components. We strongly encourage you to follow proper ESD procedures, which can include wrist straps and
smocks, when servicing equipment.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
When unpacking a static-sensitive component from its shipping carton, do not remove the component’s anti-static
packaging material until you are ready to install the component in a computer. Just before unwrapping the anti-static
packaging, be sure you are at an ESD workstation or are grounded.
When transporting a sensitive component, first place it in an anti-static container or packaging.
Handle all sensitive components at an ESD workstation. If possible, use anti-static floor pads and workbench pads.
Handle components and boards with care. Do not touch the components or contacts on a board. Hold a board by its edges
or by its metal mounting bracket.

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1 Introduction
PCI Express backplane with one PCIe x16 expansion slot with ATX power. Supports up to Gen3 card.
1.1 Specifications
Item
Description
Form Factor
1 PCIe x16 Slot
Dimensions
1.59" x 7.0"
Power
Single 12V Input
Slot
(1) x16 PCIe Gen 3 Host Interface Slot
One OSS PCIe x16 3.0 target slot for OSS target cable adapter
(1) x16 PCIe Gen 3 Endpoint Slot
One PCIe x16 3.0 expansion slot (x16 mechanical, x16 electrical)
LED Indicator
3.3VStandby Indication
Operating Temperature
0˚C to +85˚C environment
Operating Humidity
10% to 90% relative humidity non-condensing
Storage Humidity
5% to 95% relative humidity non-condensing
Industry Specifications
PCI Express™ Card Electromechanical
Specification, Rev. 3.0
PCI Express ® Base Specification, Rev. 3.0
ATX Specification, Version 2.2
Agency Compliance
• FCC Class A
• CE
• RoHS
Operating System
Windows 10, Windows Server 2012 R2; Linux OS based

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1.2 Overview
Downstream Slot: also known as endpoint slot. This is mainly for installing an add-in or plug and play PCIe card is. The
slot accommodates x2, x4, x8 and x16 PCie cards.
Target slot : Also known as Upstream slot. Designed for the Target card only. It is a Gen3 x 16 slot (electrical and
mechanical).
PS_ON : Enable force power ON. Forces the power supply to be ON all the time.
+12VDC IN Connector: ATX Input Power. Use for connecting an external power supply.
Fan Connector: For connecting external fan.

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1.2.1 Connector Pinouts
1.3 Block Diagram
1.4 Dimensions

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1.5 x16 Target Slot Connector Pin Outs
Pin #
Name
Pin #
Name
Mechanical
Key
B1
+12V
A1
GND
B2
+12V
A2
+12V
B3
+12V
A3
+12V
B4
GND
A4
GND
B5
SMCLK
A5
NC
B6
SMDAT
A6
REFCLK1+
B7
GND
A7
REFCLK1-
B8
+3.3V
A8
NC
B9
PS_ON#
A9
+3.3V
B10
3.3Vaux
A10
+3.3V
B11
WAKE#
A11
PERST#
B12
RSVD
A12
GND
End of the
x1
Connector
B13
GND
A13
REFCLK2+
B14
PETp0
A14
REFCLK2-
B15
PETn0
A15
GND
B16
GND
A16
PERp0
B17
PRSNT_X1#
A17
PERn0
B18
GND
A18
GND
B19
PETp1
A19
RSVD
End of the
x4
Connector
B20
PETn1
A20
GND
B21
GND
A21
PERp1
B22
GND
A22
PERn1
B23
PETp2
A23
GND
B24
PETn2
A24
GND
B25
GND
A25
PERp2
B26
GND
A26
PERn2
B27
PETp3
A27
GND
B28
PETn3
A28
GND
B29
GND
A29
PERp3
B30
RSVD
A30
PERn3
B31
PRSNT_X4#
A31
GND
B32
GND
A32
RSVD
B33
PETp4
A33
RSVD
End of the
x8
Connector
B34
PETn4
A34
GND
B35
GND
A35
PERp4
B36
GND
A36
PERn4
B37
PETp5
A37
GND
B38
PETn5
A38
GND
B39
GND
A39
PERp5
B40
GND
A40
PERn5
B41
PETp6
A41
GND
B42
PETn6
A42
GND
B43
GND
A43
PERp6
B44
GND
A44
PERn6
B45
PETp7
A45
GND
B46
PETn7
A46
GND
B47
GND
A47
PERp7
B48
PRSNT_X8#
A48
PERn7
B49
GND
A49
GND
B50
PETp8
A50
RSVD
End of the
x16
Connector
B51
PETn8
A51
GND
B52
GND
A52
PERp8