User`s guide

Table Of Contents
28 NovaScale 4020 User’s Guide
Front Panel Board
The front panel board connection layout is displayed in Figure 21. The front panel board
provides three main functions for the system:
It passes the IDE signals between the main board and the DVD drive
It provides the front panel interface for the system
It provides I
2
C server management interface
Front Panel Board Functional Blocks
IDE bus passes IDE signals between the IDE DVD and the main board
The 120 pin flex cable connector from main board provides IDE connectivity and
auxiliary signals
Single IDE channel pass-thru connection to IDE connector for support of an IDE
peripheral
Front panel functions
Two USB 1.1 connections
Power, Reset, SDINT and ID buttons
LEDs for power, both NIC channels, ID, system and drive failure
VGA connector providing video from main board controller
Server management
I
2
C isolation to SCSI board
Temperature sensor
A
TP00355
E
B
C
D
A. Ribbon connector to SCSI backplane board B. Power connector from SCSO backplane board
C. Flex cable to main board D. IDE connector
E. Front panel buttons, LEDs, USB, video connector F.
Figure 21. Front Panel Board Layout