SCA825S2 Backplane User’s Guide Table of Contents Safety Information and Technical Speciﬁcations ..................................1-3 1. Safety Guidelines ...................................................................................... 1-3 2. Jumper Settings and Pin Deﬁnitions ..................................................... 1-4 A. Front Jumpers and Connectors ........................................................... 1-4 A-1. Front Jumper/Connector Locations ................................................. 1-5 A-2. Front Connectors and Pin Descriptions .......................................... 1-5 A-3.

Backplane Front Jumpers ............................................................... 1-7 B. Rear Connectors and LED Indicators ................................................. 1-8 A-4. Backplane Front LEDs .................................................................... 1-7 B-1. Rear Connector/LED Indicator Locations ........................................ 1-8 3. SCSI (Super) GEM Installation Instructions for the Windows Operating System ........................................................................................................... 1-9 B-2. Rear Connector/LED Indicator Descriptions ................................... 1-8 User's Guide Revision: Rev. 1.0 Release Date:

07/25/2006 1-2

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Safety Information and Technical Speciﬁcations Safety Information and Technical Speciﬁcations 1. Safety Guidelines To avoid personal injury and property damage, please carefully follow all the safety steps listed below when accessing your system or handling the components: ESD Safety Guidelines Electric Static Discharge (ESD) can damage electronic components. To prevent dam age 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 antistatic bag.

• Handle the RAID card 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. General Safety Guidelines • Always disconnect power cables before installing or removing any components from the computer, including the SCA825S2 Backplane. • Disconnect the power cable before installing or removing any cable from the SCA825S2 Backplane. • Make sure that the SCA825S2 Backplane is securely and properly installed on the motherboard to prevent damage to the system due to power shortage.

An Important Note to the User • 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've received may or may not look exactly the same as the graphics shown in this manual. 1-3

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SCA825S2 Backplane User’s Guide 2. Jumper Settings and Pin Deﬁnitions A. Front Jumpers and Connectors B F E Front View D JPA20 JPA21 JPA14 JPA15 JPA19 JP17 H C JP19 JP16 JP20 JPA16 JP21 JPA23 JPA22 UPER SCA825S2 S G R I JP15 + A JP14 JP22 JP23 Front Jumper/Connector Locations Front Panel Connectors A/B. JP10/JPA10: Backplane Main (4-Pin) PWR Connectors C/D. GEM318 E/F. CD-ROM/Floppy Drive (4-Pin) PWR Connectors G. LVD1 SCSI Channel A H. LVDA1 SCSI Channel B I. D4: Overheat/Drive Fail LED Indicator Front Panel Jumpers (*See A-2 on Page 1-7) Front Panel LED (D4) (*See A-3 on Page 1-7) A-2. Front Panel Connectors and Pin Deﬁnitions A/B :

SCA825S2 Backplane Main Power (JP10/JPA10) Backplane Main Power Connector Pin Deﬁnitions You must use the 4-pin power con nectors (JP10/JPA10) to provide adequate power supply to the Back plane. See the table on the right for pin deﬁnitions. Backplane Main PWR 4-pin Connector (J10) 1-4 Pins # D efinition 1 2 & 3 4 +12 V Ground +5V

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