Step straight back to 1995 and the true golden era of DOS and early Windows gaming with an authentic industrial legend: an original IBM PC 350-P100 (Type 6586) Horizontal Desktop PC running its factory-original Windows 98 Second Edition installation!

Having the original factory operating system installation makes this system exceptionally desirable for collectors, archivists, and retro enthusiasts: all proprietary IBM system files, S3 Trio / onboard graphics drivers, bus controller drivers, and native real-mode DOS configurations are completely intact and fully configured out of the box—with zero missing driver yellow exclamation marks!

Built like an absolute tank in IBM’s heavy-gauge industrial beige steel desktop chassis with its iconic blue IBM emblem, recessed horizontal drive bays, and heavy-duty front power rocker, the PC 350-P100 is one of the most reliable and collectible Socket 5/Socket 7 platforms ever created. Powered by an authentic Intel Pentium processor running at 100MHz, a robust 64MB of 72-pin SIMM RAM, and an internal IDE hard drive, this system powers on smoothly and boots cleanly into an authentic installation of Microsoft Windows 98 Second Edition (with full MS-DOS 7.1 real-mode compatibility)!

For retro PC gamers, vintage hardware collectors, and archivists, an authentic bare-metal Pentium 100MHz system with native ISA/PCI architecture is the holy grail for DOS and early Windows 95/98 gaming. It completely eliminates CPU speed-sensitive runtime errors, sound emulation latency, and modern OS incompatibilities. It natively runs era-defining blockbusters like DOOM & DOOM II, Duke Nukem 3D, Quake, Command & Conquer: Red Alert, Warcraft II: Tides of Darkness, Descent, The Secret of Monkey Island, X-COM: UFO Defense, SimCity 2000, Wolfenstein 3D, and Heretic.

Engineered with true legacy hardware connectivity that modern PCs simply cannot replicate:

• An integrated 3.5" 1.44MB floppy diskette drive (essential for authentic floppy gaming and vintage disk imaging)

• 5.25" optical CD-ROM drive for running classic disc-based DOS and Windows 9x titles

• Native integrated S3 Trio / Vision graphics with analog VGA monitor output (crystal-clear, zero-lag output on vintage CRT monitors)

• Motherboard rear legacy I/O: dual PS/2 ports for vintage mechanical keyboards and ball mice, dual 9-pin RS-232 serial COM ports (ideal for serial mice, external modems, and CNC/industrial equipment), and a DB-25 parallel printer port

• Internal riser architecture offering open 16-bit ISA slots and PCI slots—ready for your choice of Sound Blaster 16, AWE32, Roland MPU-401, or 3dfx Voodoo add-in cards!

Key Specifications & Retro Hardware Details

• Brand: International Business Machines (IBM)

• Model: PC 350-P100 (Machine Type: 6586 Series)

• Form Factor: Heavy-Gauge Horizontal Desktop Chassis (Monitor Stand Form Factor)

• Processor (CPU): Genuine Intel Pentium Processor @ 100 MHz (Socket 5 / Socket 7 Architecture)

• Installed Memory (RAM): 64 MB High-Speed 72-Pin SIMM Fast Page / EDO RAM

• Storage (HDD): Internal IDE/PATA Hard Disk Drive with original factory OS partition

• Operating System: Microsoft Windows 98 Second Edition (Windows 98 SE with Native MS-DOS 7.1 Subsystem, Original Factory Install with all drivers configured)

• Graphics: Integrated S3 Trio / Vision Graphics Controller with 15-Pin Analog VGA Output

• Floppy Drive: Integrated 3.5" 1.44MB Floppy Diskette Drive

• Optical Drive: 5.25" Internal Tray-Loading CD-ROM Optical Drive

• Expansion Architecture: Internal Industrial Riser Card with open 16-bit legacy ISA slots and PCI expansion slots

• Rear I/O Connectivity:

  • 1 x 15-Pin Analog VGA Video Monitor Output (ideal for CRT gaming)

  • 2 x PS/2 Legacy Ports (Keyboard & Mouse)

  • 2 x 9-Pin RS-232 Serial COM Ports (COM1 & COM2)

  • 1 x DB-25 Parallel Printer Port (LPT1)

• Front Access: Front power toggle switch, system activity LEDs, and classic recessed horizontal drive bays

• Chassis Badging: Original IBM PC 350-P100 front bezel badge and classic blue IBM logo intact

Condition Notes

• Functional Condition: 100% bench-tested and fully operational. Powers on immediately, passes memory checks, and boots cleanly and swiftly into its original factory installation of Windows 98 SE with native DOS support. The Intel Pentium 100MHz processor runs cool and rock-solid, all 64MB of RAM test healthy, and the IDE hard drive reads and writes cleanly. The 3.5" floppy drive reads media properly, the CD-ROM drive actuates smoothly, and the onboard VGA port outputs a crisp, rock-solid analog video signal.

• Cosmetic Condition: Great vintage collector condition overall. The classic heavy industrial beige steel chassis, internal frame, and front bezel are structurally rock-solid with no missing case feet, stripped screws, or cracked plastic. Shows light, authentic, uniform vintage patina, faint shelf wear, and minor surface marks consistent with careful archiving and 30 years of age. Original front IBM badges, serial stickers, and rear port labels remain intact and legible. Please review photos for an exact look at physical condition.

What's Included

• IBM PC 350-P100 Desktop Computer (Complete with Pentium 100MHz CPU, 64MB RAM, HDD, CD-ROM, and 3.5" Floppy Drive)

• Standard Heavy-Duty AC Power Cable

• Note: The external monitor and video cables shown in testing photos are for demonstration purposes only and are NOT included.

Professional Packaging & Shipping NoticeClassic 1990s IBM horizontal desktop computers feature thick, heavy industrial steel frames and delicate mechanical drives that require premium transit care. This PC will be wrapped securely in anti-static ESD shielding, cushioned generously with multiple thick layers of heavy-duty bubble padding, and boxed inside a rigid, double-walled container to guarantee safe delivery directly to your retro workbench.