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Receiving frame rear panel – StorCase Technology S20A124 User Manual

Page 13

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6

Introduction

StorCase Technology, Inc.

S20A124 User's Guide - Rev. B01

Figure 5: Receiving Frame Motherboard (Rear View)

DC Power

Connector

J3A

J3B

J3C

Cathode

Anode

P11

P12

Remote

Activity LED

Jumpers

(Factory-Installed)

68-pin SCSI

I/O Connector

= Pin 1

Drive B

Drive C

Drive A

0503d

1

21

1

21

1

21

Blower

Vent

Jumper

(Factory-Installed)

Receiving Frame Rear Panel

(Figure 5)

DC Power Connector (J1): The Data Express uses a standard 4-pin DC power connector

to accept DC power.

I/O Connectors (Drive A, Drive B, Drive C): The input/output connector provides a standard

interface for 16-bit wide SCSI signals.

Option Pins (J3A, J3B, J3C)

Remote Unit ID Selection: Pins 1-8 of these connectors are provided for remote

unit

SCSI ID selection through the computer system. Remote ID selection requires that

the

unit ID switch located on the inside of the receiving frame be set to "0" (device ID

selection

is set with a switch located on the inside of the receiving frame as shown

in Figure 9).

See Table 1 for J3 pin assignments.

Remote Activity LED: Pins 11 & 12 are used for a remote LED device activity indicator.

Jumpers: Installed at the factory - Do not remove!

Blower Vent: One (1) built-in blower provides enhanced heat dissipation (4.6 CFM).