External Layout; System Unit; Introduction - Mitsubishi Electric LS Pro Hardware Technical Reference

System unit

Introduction

The main components of the system unit are:
• base
• top cover
• system board
• disk drives
• power supply
The top cover is easily removed without any tools.
The system board contains all the processing and interface circuitry and the system
RAM. 2 or 4 Mbytes of RAM is soldered to the board and SIMMs can be fitted to increase
the total amount of system RAM to a maximum of 16 Mbytes.

External layout

The front panel of the system unit contains: the power switch and slots for four LEDs
and the IR detector for the security card. The right side panel contains the keyboard
and mouse ports, and the audio input and output sockets.
POWER SWITCH
INFRARED
SENSOR
The floppy drive bezel is on the right side of the system unit.
The rear panel contains the following connectors: mains power input; auxiliary power
outlet; monitor; Ethernet ports; serial port; parallel port.
The layout of the rear panel is shown in the illustration below.
Illustrations and pinouts of the connectors on the rear panel are given at the rear of
this section.
2/2 LS PRO HARDWARE TECHNICAL REFERENCE
LAN FLOPPY DISK
HARD DISK
INDICATOR INDICATOR
INDICATOR
PARALLEL SECURITY
TWISTED
PORT LOOP PAIR ETHERNET
VIDEO
PORT
THICK
SERIAL
ETHERNET/
PORT
TOKEN RING
PORT
POWER
FLOPPY
INDICATOR
DISK DRIVE
COVER POWER
OUT
LOCK
THIN
ETHERNET
POWER
PORT
IN
MOUSE
KEYBOARD
AUDIO IN
AUDIO OUT