Specifications

Microprocessor
System Information
Expansion Bus
System Clocks
Memory
Drives
Ports
Video
Processing-Speed Key Combinations
System-Function Key Combinations
Controls and Indicators
Power
Physical
Environmental
Regulatory Notices

Microprocessor

Microprocessor type                       33-MHz SL Enhanced Intel486™ DX chip;

                                          33-MHz SL Enhanced Intel486 SX chip;

                                          50-MHz internal/25-MHz external

                                          SL Enhanced IntelSX2™ chip;

                                          50-MHz internal/25 MHz external

                                          SL Enhanced IntelDX2™ chip;

                                          66-MHz internal/33-MHz external

                                          SL Enhanced IntelDX2 chip;

                                          100-MHz internal/33-MHz external

                                          SL Enhanced IntelDX4™ chip

Internal cache                            16 KB (SL Enhanced IntelDX4 microprocessor)

                                          8 KB (all other microprocessors)

External cache:

IntelDX2 and IntelDX4                     128-KB static SRAM (standard)

Intel486 SX and IntelSX2                  128-KB static SRAM (optional upgrade)

Math coprocessor                          internal

(except SL Enhanced Intel486 SX and                                                                       
IntelSX2 chips)

Microprocessor socket                     LIF

System Information

System chip set                           VLSI

Data bus width                            32 bits

Address bus width                         32 bits

DMA channels                              7

Interrupt levels                          15

Flash EPROM                               1 Mb

Serial port UART                          16550-compatible

Expansion Bus

Bus type                                  ISA,

                                          VL-Bus™ (optional)

Expansion slots                           6 full-length, 16-bit ISA

                                          2 optional VL-Bus

ISA bus speed:

25- or 50-MHz processor                   8.33 MHz

33-, 66- or 100-MHz processor             8.25 MHz

VL-Bus speed:

25- or 50-MHz processor                   25 MHz

33-, 66- or 100-MHz processor             33 MHz

ISA connector data width                  16 bits (maximum)

ISA connector size                        98 pins

VL-Bus connector data width               32 bits (maximum)

VL-Bus connector size                     112 pins

System Clocks

Diskette/communications ports             24 MHz from system clock

System clock                              25 or 33 MHz (depending on

                                          processor used)

Keyboard controller                       8 MHz

Memory

Architecture                              interleaved (if both SIMMs are of the

                                          same capacity);

                                          otherwise, noninterleaved

Wait states                               0 or 1

SIMM sockets                              2

SIMM capacities                           4, 8, 16, and 32 MB

                                          (parity or nonparity)

Standard RAM                              4 MB

Maximum RAM                               64 MB

External cache                            128-KB, direct-mapped SRAM*

Memory access time

tRAC                                      70 ns

tCAC                                      20 ns

BIOS address                              F0000h

* Standard for 66-MHz internal/33-MHz external SL Enhanced IntelDX2™ chip, 100-MHz internal/33-MHz external SL Enhanced IntelDX4™ chip. Optional for 33-MHz SL Enhanced Intel486 SX chip and 50-MHz internal/25-MHz external SL Enhanced IntelSX2 chip.

Drives

Externally accessible bays                (3) 5.25-inch bays for half-height diskette drives,

                                          tape drives, or CD ROM drives

                                          (1) 3.5-inch bay for a diskette drive or tape drive

Internally accessible bays                (2) 3.5-inch bays support up to (1) 1-inch

                                          and 1 half-height hard-disk drive

Ports
Externally accessible:

Serial (DTE)                              (2) 9-pin connectors;

                                          16550-compatible, 16-byte buffer

Parallel                                  (1) 25-hole connector (bidirectional)

Video                                     (1) 15-hole connector

PS/2-style keyboard                       (1) 6-pin mini-DIN

PS/2-compatible mouse                     (1) 6-pin mini-DIN

Internally accessible:

EIDE hard-disk drive*                       40-pin connector

Diskette drive                            34-pin connector

VGA feature                               26-pin connector                                                
* Supports LBA, PIO mode 2 and ATAPI.

Video

Video type                                VGA

Video chip set                            Cirrus CL-GD5429

Video memory                              1 MB

Maximum resolution                        1280 x 1024 pixels, 16 colors

Processing-Speed Key Combinations

<CTRL-ALT-\>                         toggles microprocessor speeds on 101-key keyboard

<CTRL-ALT-#>                          toggles microprocessor speeds on 102-key keyboard

System-Function Key Combinations

<CTRL-ALT-DEL>                        restarts (reboots) the computer

<CTRL-ALT-ENTER>                      starts System Setup program (MS-DOS® only)

Controls and Indicators

Reset control                             push button

Power control                             push button

Power indicator                           green LED

Diskette-drive access indicator           green LED

Hard-disk drive access indicator          green LED

Power
DC power supply:

Wattage                                   224 W

Voltage                                   90 to 130 V at 60 Hz or

                                          180 to 265 V at 50 Hz

Heat dissipation                          250 BTUs

Backup battery                            3-V CR2032 magnesium-oxide

                                          coin-cell

Physical

Height                                    41.66 cm (16.40 inches)

Width                                     19.69 cm (7.75 inches)

Depth                                     44.20 cm (17.40 inches)

Weight                                    14.5 kg (32 lb)

Environmental
Temperature:

Operating                                 0 to 35C (32 to 95F)

Storage                                   -40 to 65C (-40 to 149F)

Relative humidity                         8% to 80% (noncondensing)

Vibration:

Operating                                 0.25 G

Storage                                   0.5 G

Shock:

Operating                                 5 G

Storage                                   20 G

Altitude:

Operating                                 -16 to 3048 m (-50 to 10,000 ft)

Storage                                   -16 to 10,600 m (-50 to 35,000 ft)

Regulatory Notices
FCC (U.S. Only)

  Class B

DOC (Canada)

  Class B

CE Mark

  EN 55022

  EN 50082-1

  IEC 801-2

  IEC 801-3

  IEC 801-4

NOTE: If the front panel of the computer bears the Energy Star emblem, then its original configuration complies with the requirements set for it by the EPA for energy-efficient computers.
UL

  For computers set at 115 V  Use a UL-certified grounded cable, type SVT or SJT, with a minimum of 18    
  American wire gauge (AWG). The cable must be no longer than 15 feet and must have a parallel-blade,      
  grounded plug rated for 15 A.

  For computers set at 230 V (within the U.S.)  Use a UL-certified grounded cable, type SVT or SJT, with a 
  minimum of 18 AWG. The cable must be no longer than 15 feet and must have a tandem-blade, grounded plug  
  rated for 15 A/250 V.

  For computers set at 230 V (outside the U.S.)  Use a grounded cable, type SVT or SJT, with a minimum of 
  18 AWG. The cable must be no longer than 15 feet, must be rated according to the requirements of the     
  country in which the equipment is to be used, and must have a grounded plug. The cable should be labeled 
  "HAR" and should have the appropriate safety approvals for each country.