BPN-SAS3-743A-N4 Backplane
USER'S GUIDE
Rev. 1.0

BPN-SAS3-743A-N4 Backplane User's Guide
The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates. Please Note: For the most up-to-date version of thismanual, please see our web site at www.supermicro.com.
Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the productdescribed in this manual at any time and without notice. This product, including software, if any,and documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or
reduced to any medium or machine without prior written consent.
IN NO EVENT WILL SUPERMICRO BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO
USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN PARTICULAR, SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY
HARDWARE, SOFTWARE, OR DATA STORED OR USED WITH THE PRODUCT, INCLUDING THE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.															Any disputes arising between manufacturer and customer shall be governed by the laws of Santa
Clara County in the State of California, USA. The State of California, County of Santa Clara shallbe the exclusive venue for the resolution of any such disputes. Super Micro's total liability for allclaims will not exceed the price paid for the hardware product. 													California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate
warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate
Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”

WARNING: Handling of lead solder materials used in thisproduct may expose you to lead, a chemical known to
the State of California to cause birth defects and otherreproductive harm.

Manual Revision 1.0							Release Date: December 6, 2017
Unless you request and receive written permission from Super Micro Computer, Inc., you may notcopy any part of this document.
Information in this document is subject to change without notice. Other products and companies
referred to herein are trademarks or registered trademarks of their respective companies or markholders.
Copyright © 2017 by Super Micro Computer, Inc.
All rights reserved.

Printed in the United States of Americaii

Preface

Table of Contents
Contacting Supermicro........................................................................................iv
Returning Merchandise for Service.....................................................................v

Chapter 1 Safety Guidelines.....................................................................1-11-1

ESD Safety Guidelines.................................................................................... 1-1

1-2

General Safety Guidelines............................................................................... 1-1

1-3

An Important Note to Users............................................................................. 1-2

1-4Introduction to the BPN-SAS3-743A-N4 Backplane........................................ 1-2

Chapter 2 Connectors and Pin Definitions.............................................. 2-1
2-1

Front Connectors............................................................................................. 2-1

2-2Front Connector Pin Definitions....................................................................... 2-22-3

Front Jumper Locations and Pin Definitions.................................................... 2-3

2-4

Rear Connectors and LED Indicators.............................................................. 2-5iii

BPN-SAS3-743A-N4 Backplane User's Guide

Contacting Supermicro
Headquarters
Address:

Super Micro Computer, Inc.
980 Rock Ave.
San Jose, CA 95131 U.S.A.

Tel:+1 (408) 503-8000

Fax:+1 (408) 503-8008

Email:

marketing@supermicro.com (General Information)
support@supermicro.com (Technical Support)

Web Site:www.supermicro.com

EuropeAddress:

Super Micro Computer B.V.
Het Sterrenbeeld 28, 5215 ML's-Hertogenbosch, The NetherlandsTel:+31 (0) 73-6400390

Fax:+31 (0) 73-6416525

Email:

sales@supermicro.nl (General Information)
support@supermicro.nl (Technical Support)
rma@supermicro.nl (Customer Support)

Asia-Pacific
Address:

Super Micro Computer, Inc.
4F, No. 232-1, Liancheng Rd.
Chung-Ho 235, Taipei County
Taiwan, R.O.C.

Tel:+886-(2) 8226-3990

Fax:+886-(2) 8226-3991

Web Site:www.supermicro.com.tw

Technical Support:
Email:

support@supermicro.com.tw

Tel:886-2-8226-1900

iv

Preface

Returning Merchandise for Service
A receipt or copy of your invoice marked with the date of purchase is required before any warranty service will be rendered. You can obtain service by calling yourvendor for a Returned Merchandise Authorization (RMA) number. When returning
to the manufacturer, the RMA number should be prominently displayed on theoutside of the shipping carton, and mailed prepaid or hand-carried. Shipping andhandling charges will be applied for all orders that must be mailed when service
is complete.
For faster service, RMA authorizations may be requested online (http://www.supermicro.com/support/rma/).
Whenever possible, repack the backplane in the original Supermicro box, using theoriginal packaging materials. If these are no longer available, be sure to pack thebackplane in an anti-static bag and inside the box. Make sure that there is enoughpackaging material surrounding the backplane so that it does not become damaged
during shipping.
This warranty only covers normal consumer use and does not cover damages incurred in shipping or from failure due to the alteration, misuse, abuse or improper
maintenance of products.
During the warranty period, contact your distributor first for any product problems.

vChapter 1: Safety Guidelines

Chapter 1
Safety Guidelines

To avoid personal injury and property damage, carefully follow all the safety steps
listed below when accessing your system or handling the components.

1-1

ESD Safety Guidelines

Electrostatic Discharge (ESD) can damage electronic com­ponents. To prevent damage to your system, it is important to handle it very carefully. The following measures
are generally sufficient to protect your equipment from ESD.

• Use a grounded wrist strap designed to prevent static discharge.
• Touch a grounded metal object before removing a component from the antistaticbag.

• Handle the backplane by its edges only; do not touch its components, peripheral
chips, memory modules, or gold contacts.

• When handling chips or modules, avoid touching their pins.
• Put the card and peripherals back into their antistatic bags when not in use.
1-2

General Safety Guidelines• Always disconnect power cables before installing or removing any components
from the computer, including the backplane.

• Disconnect the power cable before installing or removing any cables from thebackplane.

• Make sure that the backplane is securely and properly installed on the motherboard to prevent damage to the system due to power shortage.

1-1

BPN-SAS3-743A-N4 Backplane User's Guide

1-3

An Important Note to Users• All images and layouts shown in this user's guide are based upon the latest PCB
revision available at the time of publishing. The card you have received may ormay not look exactly the same as the graphics shown in this manual.

1-4

Introduction to the BPN-SAS3-743A-N4 Backplane

The BPN-SAS3-743A-N4 backplane has been designed to utilize the most upto-date technology available, providing your system with reliable, high-qualityperformance.
This manual reflects BPN-SAS3-743A-N4 Revision 1.00, the most current releaseavailable at the time of publication. Always refer to the Supermicro Web site atwww.supermicro.com for the latest updates, compatible parts, and supported
configurations.

1-2

Chapter 2: Connectors and Pin Definitions

Chapter 2Connectors and Pin Definitions

2-1

Front Connectors

1324756891011Figure 2-1. Front Connectors

1. Chip: CPLD

7. SAS Port #1: JSM1

2. JTAG Connector: J16

8. SAS Port #0: JSM0

3. NVMe Connector #3: CN3

9. Power Connector (4-pin) #3:JPW3

4. NVMe Connector #2: CN2

10. Power Connector (4-pin) #2:JPW2

5. NVMe Connector #1: CN1
6. NVMe Connector #0: CN0

11. Power Connector (4-pin) #1:
JPW1

2-1

BPN-SAS3-743A-N4 Backplane User's Guide

2-2

Front Connector Pin Definitions#1. CPLD Chip
The CPLD is an enclosure management
chip that supports the SGPIO and LEDmanagement.
#2. JTAG Connector
The JTAG connector, designated J16, isused for diagnostic purposes. This connector should not be used as it is for internal
testing only.
#3. - 6. NVMe Connectors
The NVMe ports are used to connect theNVMe drive cables. To configure 2 NVMedrives, OCuLink cables CBL-SAST-0820
should be used to connect ports CN0 andCN1 to NVMe slots 1 and 2 on motherboard
X11DAi-N. To configure 4 NVMe drives,OCuLink cables CBL-SAST-0820 should
be used to connect all 4 ports to four corresponding ports on add-on card AOC-SLG34E4T in slot 3 of motherboard X11DAi-N
and connected to the motherboard's NVMe
I2C2 header with cable CBL-CDAT-0674.
#7. - 8. SAS Ports
The SAS ports are used to connect theSAS or SATA drive cables CBL-SAST-0532
to an HBA card inserted in a PCIe slot on
motherboard X11DAi-N. The 2 ports aredesignated JSM0, for drives at SAS #0-#3,and JSM1, for drives at SAS #4-#7 (seesection 2-4 for SAS drive locations). Eachport is also compatible with SATA drives.
However, mixing SAS and SATA drives inthe same enclosure is not recommended.
#9. - 11. Backplane Main Power Connectors
The 4-pin connectors, designated JPW1,JPW2, and JPW3, provide power to thebackplane. See the table on the right forpin definitions.

Backplane
Main Power4-Pin Connector
Pin#   Definition   
1+12V

2 and 3Ground42-2+5V

Chapter 2: Connectors and Pin Definitions

2-3

Front Jumper Locations and Pin Definitions

JP8JP9ACTLED

Figure 2-2. Front Jumpers

Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the functionof the connector. Pin 1 is identified witha square solder pad on the printed circuitboard.
Note: On two pin jumpers, "Closed" means
the jumper is on and "Open" means thejumper is off the pins.

2-3Connector
Pins

32

1

3

2

1

JumperSetting

BPN-SAS3-743A-N4 Backplane User's Guide

Jumper Settings
JP8

JP9

Description

2-3

2-3

All 4 drives connected to main CPU. (default)

1-2

2-3

3 drives connected to main CPU, 1 drive connected to 2ndCPU.

2-3

1-2

2 drives connected to main CPU, 2 drives connected to 2ndCPU.

1-2

1-2

1 drive connected to main CPU, 3 drives connected to 2ndCPU.

LED Test
ACTLED

Description

OpenFor internal use only. (default)

2-4Chapter 2: Connectors and Pin Definitions

2-4

Rear Connectors and LED Indicators

NVMe#0NVMe#1 NVMe#2 NVMe#3/SAS#0 /SAS#1 /SAS#2 /SAS#3 SAS#4 SAS#5 SAS#6 SAS#7FAIL#0 FAIL#1 FAIL#2 FAIL#3 FAIL#4 FAIL#5 FAIL#6 FAIL#7ACT#0 ACT#1 ACT#2ACT#3ACT#4 ACT#5 ACT#6 ACT#7Figure 2-4. Rear Connectors & LED Indicators

SAS/SATA/NVMe Connectors and LED Indicators
RearConnector

SAS Drive
NumberFailure
LEDActivity
LED#0

SAS/SATA/NVMe HDD #0

FAIL #0

ACT #0#1

SAS/SATA/NVMe HDD #1

FAIL #1

ACT #1#2

SAS/SATA/NVMe HDD #2

FAIL #2

ACT #2#3

SAS/SATA/NVMe HDD #3

FAIL #3

ACT #3#4

SAS/SATA HDD #4

FAIL #4

ACT #4#5

SAS/SATA HDD #5

FAIL #5

ACT #5#6

SAS/SATA HDD #6

FAIL #6

ACT #6#7

SAS/SATA HDD #7

FAIL #7

ACT #72-5

BPN-SAS3-743A-N4 Backplane User's Guide

Disclaimer (cont.)
The products sold by Supermicro are not intended for and will not be used in life support systems, medical equipment, nuclear facilities or systems, aircraft, aircraft devices,
aircraft/emergency communication devices, or other critical systems whose failure toperform would be reasonably expected to result in significant injury or loss of life orcatastrophic property damage. Accordingly, Supermicro disclaims any and all liability,
and should buyer use or sell such products for use in such ultra-hazardous applications,
it does so entirely at its own risk. Furthermore, buyer agrees to fully indemnify, defend,and hold Supermicro harmless for and against any and all claims, demands, actions,litigation, and proceedings of any kind arising out of or related to such ultra-hazardous
use or sale.

2-6