Dell OptiPlex 486 Specifications

Dell OptiPlex 486/SL, LE, L, M, ME, MXE

Specifications

Processor
Intel 486SX/25, 486DX/33, 486DX2/50, 486DX2/66MHz
Memory
4MB standard, expands to 64MB
I/O Expansion Slots
4xx/L(v), 4xxsL(v): 3- full length 16-bit ISA, 1- VESA,
4xx/MXE: 5-full length 16-bit ISA slots
Diskette Drive
1.44MB diskette drive
Integrated Features
Parallel, 2-serial, keyboard, VGA
Internal Expansion Bays
4xx/L(v), 4xxsL(v): 2-user accessible, 1-internal bays
4xx/MXE: 3- user accessible bays, 2 internal
I/O Architecture
ISA
Power Supply
150 Watts
Diagnostics
Normal Post Diags performed on Power UP of system.
Dell system support diskette
Troubleshoot according to errors found during test
CMOS Access
QAPlus/FE

Tools and Software Requirements

Flat bladed screwdriver
Needle nose pliers
Anti-static wrist strap
Diagnostics and formatted blank diskettes
IBM Document: Dell
Page 1 of 2
OptiPlex 486/SL ,LE , L, M, ME,MXE OptiPlex 486/SL ,LE , L, M, ME,MXE
System Board -- Jumper Settings
Jumper Setting
25MHz
30MHz
33MHz
40MHz
SPARE
VGA jumpered *
unjumped
FEATR
IOADDR jumpered*
unjumped
PSWD jumpered*
unjumped
UPGR jumpered
unjumped
BIOS jumpered *
unjumped
BOOT
CRDBIOS
PS/2_MSE jumpered *
unjumped
IDE_IO
VL1 jumpered
unjumped
VL2 jumpered
unjumped
VL_0WS unjumped
* Default
Removal Procedures
Before beginning removal complete the following steps.
1. Turn off the computer and any peripheral devices.
2. Disconnect AC power cord from the outlet and
system
3. Disconnect all peripheral devices from the
computer
System Cover
How to remove the cover:
1. Unscrew 2 thumbscrews on back panel of CPU
2. Unscrew 3 thumbscrews on back w/ 486MXE model
3. Slide cover forward and lift up off of chassis

Field Replaceable Units

Memory
4MB SIMM
8MB SIMM
1MB X 32
8MB SIMM
4MB X 32
16MB SIMM
32MB SIMM
Function
External prcrssr is 25MHz
Reserved
Ext. microprcssr is 33MHz
Reserved
Reserved
Turns on built-in VGA
Turns off built-in VGA
Reserved
I/O address is 26Eh-26Fh
I/O address is 398h-399h
Password on
Password off
Microprcssr installed
Microprcssr in PQFP sckt.
Flash BIOS updated by disk
Flash BIOS can't update
Reserved
Reserved
PS/2 mouse port IRQ12 on
PS/2 mouse port is off
Reserved
VESA riser card not installed
VESA riser card installed
VESA riser card not installed
VESA riser card installed
Reserved(on riser card)
OEM Part IBM Part
38393 22H2932
31520 22H2933
35234 22H2934
38394 22H2935
35236 22H2936
31522 22H2939
41227 22H3195
02/97 Doc # MT00-020
Copyright International Business Machines, 1997
All rights reserved
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