Copyright Technical Support - Chenbro

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Chenbro 4-Port Multilane 

SATA Backplane User’s Manual 

This document is copyrighted, 2004, by Chenbro Micom Co., Ltd. All rights are reserved. 

Chenbro Micom Co., Ltd. reserves the right to make improvements to the products 

described in this manual at any time. Specifications are thus subject to change without 

prior notice. 

No part of this manual may be reproduced, copied, translated, or transmitted in any 

form or by any means without the prior written permission of Chenbro Micom Co., Ltd. 

Information provided in this manual is intended to be accurate and reliable. However, 

Chenbro Micom Co., Ltd., assumes no responsibility for its use, nor for any 

infringements upon the rights of third parties, which may result from its use. 

Technical Support 

We want you to get the maximum performance from your products. So if you run into 

technical difficulties, we are here to help. For the most frequently asked questions, you 

can easily find answers in your product documentation. These answers are normally a 

lot more detailed than the ones we can give over the phone. 

So please consult this manual first. If you still cannot find the answer, gather all the 

information or questions that apply to your problem, and with the product close at hand, 

call your dealer. Our dealers are well trained and ready to give you the support you 

need to get the most from your Chenbro products. In fact, most problems reported are 

minor and are able to be easily solved over the phone. 

In addition, free technical support is available from Chenbro engineers every business 

day. We are always ready to give advice on application requirements or specific 

information on the installation and operation of any of our products. 

Preliminary Edition Printed in Taiwan Aug 2004

Hardware Specification 

Multilane SATA Backplane: 


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An “Infiniband 4X receptacle” as host plug connector for 4 SATA channels. 

A power MOSFET to provide per disk power (5V and 12V) for each disk spin-up 

control. 

A uP to control the disk spin up function if LED board enable this function, set by a 

DIP switch pin, and start from the lowest position backplane. (i.e. the top one 

would be the latest to spin up. 

5 fan connectors (3 pins): each support 12V current up to 750mA (max power 

consumption: 9 watts) 

A 4x3 jumper with 4-digit jumper cap is added to select either disk power or disk 

activity for LED indication. 

A design hook with a zero ohm resistor to conduct disk reserved pin (P11) to 

disk activity LED. (It’s for the case that the pin is defined for disk LED output) 

Multiple SATA backplanes (up to 4) is cascaded by a connector to report fan, disk 

and thermal signals: 

1 thermal signal per SATA backplane reporting to LED module 

4 disk activity (or present) signals per SATA backplane reporting to LED 

module 

5 fan speed signals (for all SATA backplane) reporting to LED module 

A pre-charge circuit for surge current protection when a disk is plugged in. 

2 standard big-4P (Molex device connector) power inlets 

LED Module (for 2U/3U/4U) 

1 power button and 1 reset button 

1 buzzer for alerting and 1 alarm mute button (controlled by uP) 

2 standard USB 1.1/2.0 ports 

1 connector for RPS (Redundant Power Supply) fault event detection 

1 connector with signal controlled by uP to mute RPS built-in audio alarm 

1 connector with I 2 C signals as a design hook to support peripheral management 

interface 

1 connector to gather fan speed, disk activity, and thermal signals from SATA/SCSI 

backplane by a FFC cable 

Total 16 (4x4) LEDs for disk activity signal from 4 backplane 

4 thermal signal inputs from 4 backplane (detected by uP) 

Total 5 fans supported


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5 mono LEDs: Power, LAN1, LAN2, HDD and Fan/Thermal event LEDs 

LED color: Power-Blue, LANs-Green, HDD-Amber, and Event-Red 

DIP switch to specify thermal warning level (55 or 65 degC) 

DIP switch to specify spin-up control for SATA backplane 

Backplane Layout 

Backplane Connectors 

CN4 

J1 

FAN5 

FAN4 

CN2 

CN3 

(Not Installed) 

FAN3 

JP1 

FAN2 FAN1 JP2 

SATA HDD1 SATA HDD2 SATA HDD3 SATA HDD4 

(1) [SATA_HDD1 / SATA_HDD2 / SATA_HDD3 / SATA_HDD4] : Connect SATA HDD 

(2) [JP1] : Connect next backplane LED connector 

(3) [CN4] : Connect Multilane SATA HBA 

(4) [FAN1 / FAN2 / FAN3 / FAN4 / FAN5] : Fan connectors 

(5) [CN1 / CN2] : Power connectors 

(6) [JP2] : Connect LED board or connect another backplane 

(7) [J1] : Choice present LED from HDD or SATA P11 

Pin Assignment 

[SATA_HDD1 / SATA_HDD2 / SATA_HDD3 / SATA_HDD4] 

Pin Def. Pin Def. Pin Def. Pin Def. Pin Def. 

S1 GND S6 B+ P1 N/C P6 GND P11 Reserved 

S2 A+ S7 GND P2 N/C P7 +5V P12 GND 

CN1 

SATA HDD Connector

S3 A- P3 N/C P8 +5V P13 +12V 

S4 GND P4 GND P9 +5V P14 +12V 

S5 B- P5 GND P10 GND P15 +12V 

[HDD1 / HDD2 / HDD3 / HDD4] 

Pin Def. Pin Def. 

S1 GND S5 B- 

S2 A+ S6 B+ 

S3 A- S7 GND 

S4 GND 

[FAN1 / FAN2 / FAN3 / FAN4 / FAN5] 

Pin Def. 

1 GND 

2 +12V 


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3 Sensor 

FAN Connector 

Note: 

(1) Please connect the chassis fan starting from FAN1 

(2) The fan MUST be connected with 4 or 5 fans due to chassis monitoring setting. 

[CN1 / CN2] 

Pin Def. 

1 +5V 

2 GND 

3 GND 

4 +12V 

[JP1] / [JP2] 

Pin Def. Pin Def. Pin Def. 

1 +5V 12 GND 23 HDD_LED_C#_2U 

2 +5V 13 Thermal_Sig_1U 24 HDD_LED_D#_2U 

3 +5V 14 Thermal_Sig_2U 25 HDD_LED_A#_3U 

4 GND 15 Thermal_Sig_3U 26 HDD_LED_B#_3U 

5 GND 16 Thermal_Sig_4U 27 HDD_LED_C#_3U 

6 GND 17 HDD_LED_A#_1U 28 HDD_LED_D#_3U 

7 Fan1_Sensor 18 HDD_LED_B#_1U 29 HDD_LED_A#_4U 

8 Fan2_Sensor 19 HDD_LED_C#_1U 30 HDD_LED_B#_4U 

HDD_HBA Connector 

Power Connector 

FFC Cable Connector


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9 Fan3_Sensor 20 HDD_LED_D#_1U 31 HDD_LED_C#_4U 

10 Fan4_Sensor 21 HDD_LED_A#_2U 32 HDD_LED_D#_4U 

11 Fan5_Sensor 22 HDD_LED_B#_2U 33-34 Key-Pin 

Default Jumper Setting (with “*”) 

[J1] 

Pin Function 

1-2* Present Activity LED from HDD 

2-3 Present Activity LED from SATA Pin-11 

LED Module (for 2U/3U/4U) Layout 

LED Module Connectors 

J4 

Power LED (Blue) 

HDD LED (Orange) 

System Reset 

J1 

LED1 LED2 LED3 LED4 

[J1] : To USB Port of M/B 

Alarm Mute 

USB 

J2 

BZ1 

J3 

S1 

HDD Access LED Jumper 

Fan Fail LED (Red) 

J6 

J5 

LAN1 (Green) 

Power Switch 

LAN2 (Green)

[J2] : To M/B Control and LED Connector 

[J3] : Cascade to the top SATA/SCSI Backplane 

[J4] : I 2 C Management Connector (Reserved) 

[J5] : RPS (Redundant Power Supply) Fail Event Mute 

[J6] : PRS (Redundant Power Supply) Failure Alarm 

[S1] : Temperature Monitoring Configure Switch 

[BZ1] : Alarm Buzzer 

[USB] : 2 USB Ports 

[LED1 / LED2 / LED3 / LED4] : HDD LED Indicators 

Pin Assignment 

[J1] 


1 USB_Vcc 6 USB_Vcc 

2 USB_D0+ 7 USB_D1+ 

3 USB_D0- 8 USB_D1- 

4 GND 9 GND 

5 Key-Pin 10 N/C 

[J2] 


1 Reset+ 7 HDD_LED+ 

2 Reset_GND 8 HDD_LED- 

3 PS_ON 9 LAN1_LED+ 

4 PS_ON_GND 10 LAN1_LED- 

5 Power_LED+ 11 LAN2_LED+ 

6 Power_LED- 12 LAN2_LED- 

[J3] 

Pin Def. Pin Def. Pin Def. 


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USB Connector 

System Control 

1 +5V 12 GND 23 HDD_LED_C#_2U 

2 +5V 13 Thermal_Sig_1U 24 HDD_LED_D#_2U 

3 +5V 14 Thermal_Sig_2U 25 HDD_LED_A#_3U 

4 GND 15 Thermal_Sig_3U 26 HDD_LED_B#_3U 

5 GND 16 Thermal_Sig_4U 27 HDD_LED_C#_3U 

6 GND 17 HDD_LED_A#_1U 28 HDD_LED_D#_3U 

7 Fan1_Sensor 18 HDD_LED_B#_1U 29 HDD_LED_A#_4U 

FFC Cable Connector


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8 Fan2_Sensor 19 HDD_LED_C#_1U 30 HDD_LED_B#_4U 

9 Fan3_Sensor 20 HDD_LED_D#_1U 31 HDD_LED_C#_4U 

10 Fan4_Sensor 21 HDD_LED_A#_2U 32 HDD_LED_D#_4U 

11 Fan5_Sensor 22 HDD_LED_B#_2U 33-34 Key-Pin 

[J4] 

Pin Def. 

1 Data 

2 GND 

3 Clock 

4 Vcc 

[J5] 

Pin Def. 

1 TTL 

2 GND 

[J6] 

Pin Def. 

1 TTL 

2 GND 

Default Jumper Setting (with “*” ) 

[S1] 

DIP Function ON OFF 

1 Monitoring BP Fan Q’ty Setting 4* 5 

2 Monitoring Temperature Setting 55 DegC* 65 DegC 

3 SATA HDD Spin Up Simultaneously 

ON 

Sequential 

Spin Up* 

I 2 C Connector 

RPS Fail Alarm 

RPS Fail Mute 

S1

Relative Parts 


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(1) Multilane SATA cable: This cable is suggested to used with Chenbro Multilane SATA 

backplane due to the chassis mechanism design and limitation. And the cable 

length is 600mm (including connectors). 

(2) SATA HDD activity LED cable: This cable ONLY works with “3ware 9000 series SATA 

RAID card” which support dedicated connectors for activity LED signal output. 

Chenbro Multilane SATA and standard SATA backplane already reserved this feature 

to support and fulfill existing SATA storage chassis field monitoring for users. 

Figure-1: Multilane SATA cable & SATA HDD LED cable for activity 

Backplane Assembly 

The Chenbro 4-Port SATA Backplane can be assembly on Chenbro Storage Server 

Chassis (RM117 / RM215 / RM312 / RM414 / RM519), please refer to the Chassis 

Installation Guide for the necessary information. 

Note: 

(1) Backplane bracket is needed when doing assembly. 

(2) Backplane bracket and FFC cable are included in the Backplane Ass’y Kit. 

(3) When doing multiple backplane integration, the FFC cable must be installed on the 

backplane first. (See below for the details)

Figure-2: FFC connector on LED module 

Figure-3: Push the lever to lock FFC cable 

Figure-4: Folding the LED Board FFC cable 


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FFC cable can be connected in 

on way only. The contact pin 

MUST face to “White” side of 

connector.

Backplane Wiring 


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(1) Multilane SATA cable: The Multilane backplane is easy to connect to the 3ware 

Multilane SATA RAID card via just a single cable per backplane. However, due to the 

specific Multilane SATA connector is quite unique, user can refer to below figure for the 

cabling. Note only hearing “click” sound when plug in the connector is in well 

connection, otherwise it may lead to some system operation errors which caused by 

poor connection. 

Figure-5: Multilane SATA cable connection & real assembly in Chenbro RM414 

(2) SATA HDD activity LED cable (For “3ware 9000 series SATA RAID card): 

When hook up this cable please note one cable for only one backplane, user must have 

certain quantity of cable for the cabling. Please refer to below diagram for the wiring 

instruction: 

Figure-6: Backplane side connection

Figure-7: 3ware 9000 series SATA/RAID card connection 


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Note: 

(a) Do NOT reverse the card side connector on cabling, otherwise the Chassis front 

LED will not work properly (see above picture). 

(b) Please refer to 3ware 9000 series SATA RAID card documentation for the relative 

connector definition. 

(3) Chassis assembly example: See below for the example of how the wiring to be 

performed. 

Example for 2U chassis Multilane SATA backplane wiring diagram (RM215): 

3ware SATA Chassis Fan x4 

RAID Card 

HDD5 HDD6 HDD7 HDD8 


Multilane SATA cable (BP 

to Host Adaptor) 

LED FFC cable (BP to BP) 

Chassis fans wiring 

(Connection start from FAN1)


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RAID Card 










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RAID Card 





Chassis Compatibility 

The Multilane SATA backplane is particularly designed and used for 3ware 8000/9000 

series SATA RAID card, and Chenbro support this backplane and chassis based on 

specific models and revision. Please contact with your local sales and distributors for 

more details before you start to assembly. So far, Chenbro can support the chassis by: 

1U : RM117 

2U : RM215 (RM21502) 

3U : RM312 (RM31202) 

4U: RM414 (RM41402) 

5U: RM519 (RM51902) 






Note: 


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The RM519 chassis support Multilane SATA backplane via another specific cable, 

please check with your sales or local distributors for more details. 

Any chassis in earlier version, users need to order the other relative parts, especially 

for 2U and 4U chassis. An additional “fan bar kit” and “LED board kit” will be needed for 

replacement. (See below parts list) 

Relative Part Number List 

Part No. Description Unit Remark 

26-143124-001 BP to LED Module FFC Cable, 280mm (for 1U) Pcs 

26-143215-002 BP to LED Module FFC Cable, 390mm (for 2U/3U/4U) Pcs 

26-143215-001 BP to BP (Cascade) FFC Cable, 110mm Pcs 

26-123215-001 Multilane SATA Cable, 600mm (1 pcs) Pcs 

26-113519-006 SATA HDD activity LED Cable, 700mm (1 pcs) Pcs 

26-033219-002 USB Cable 2.0, 750mm, Universal Specification Pcs 

26-033219-003 USB Cable 2.0, 600mm, Universal Specification Pcs 

80-103215-008 4-port Multilane SATA BP with Anti-static Bag Pcs 

84-321510-015 Ass’y 4-port Multilane SATA BP w/Bracket & screws 

(1 pcs, for RM215/312/414) 

84-311710-009 Ass’y 4-port Multilane SATA BP w/Bracket & screws 

(1 pcs, for RM117) 

84-312410-010 LED board kit, w/FFC cable (for RM117) Pack 

84-321510-016 LED board kit, w/FFC cable (for RM215/312/414) Pack 

84-321510-017 Fan bar kit (for RM21500/RM21501) Pack 

84-341410-005 Fan bar kit (for RM41400/RM41401) Pack 

Pcs 

Pcs

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