IBM PS/2 Model 53 SLC2
| Company type | Product line |
|---|---|
| Industry | Personal computers |
| Predecessor | IBM PC |
| Founded | 1987 |
| Founder | International Business Machines Corporation (IBM) |
| Fate | Succeeded IBM PC range |
Area served | Worldwide |
| Products | Personal computers (desktop, tower, all-in-one, portable, laptop, notebook) |
| Owner | IBM |
| Parent | IBM |
The IBM Personal System/2 (PS/2) series represented a lineup of personal computers created by International Business Machines Corporation (IBM). Introduced in 1987, the PS/2 succeeded IBM's initial IBM PC range, which was discontinued upon the PS/2 launch. The majority of PS/2 units incorporated IBM's proprietary Micro Channel architecture (MCA) bus, a closed design intended to reassert IBM's dominance in the personal computer industry. Nevertheless, certain entry-level models continued to utilize the widely adopted and open Industry Standard Architecture (ISA) bus, prevalent in earlier IBM PC generations. The PS/2 family encompassed various form factors, including desktop units, tower cases, integrated all-in-one systems, portable computers, laptops, and notebooks.
Notes
- Legend
- Explanatory notes
- Due to length constraints, submodels identified by IBM part numbers for sales outside North America are not listed.
- Unless otherwise noted, built-in or optional displays are cathode-ray tube (CRT) types.
- The Space Saving Keyboard is a compact 87-key variant of the Model M, omitting the numeric keypad.
- The Model 25 Collegiate was designed for university students, featuring dual 720 KB floppy drives, up to 640 KB RAM, bundled with the official PS/2 Mouse, Windows 2.0, and four blank floppy disks.
- Financial workstation configurations included a 50-key function keypad tailored for banking tasks.
- LS ("LAN Station") models operated as diskless workstations without internal floppy or hard drives, connecting via Ethernet or Token Ring interfaces.
- Ultimedia editions came equipped with microphones and incorporated SCSI CD-ROM drives, M-Audio sound cards, volume controls, and front-panel headphone/microphone jacks.
- Array models functioned as PS/2 servers supporting RAID configurations.
Main line
... (Note: Given the extensive size of the original table, only a sample is presented here to demonstrate summarization. The complete table would maintain essential specifications such as model identifiers, processor details, clock rates, bus technologies, expansion capabilities, memory configurations, video hardware, form factors, launch dates, and key features like network compatibility or multimedia support while reducing repetitive descriptions.)PS/2 Server
| Model | IBM P/N | CPU | Clock Speed (MHz) |
Bus | Expansion Slots |
Drive Bays |
FDD | HDD | Base RAM |
Max RAM |
Video Adapter | Display | Form Factor | Release Date | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 8525-001 | Intel 8086 | 8 (no wait states) | ISA, 8-bit | 2 | 2 | One 720 KB | None | 512 KB | 640 KB | MCGA | 12-inch monochrome | All-in-one | Template:Date table sorting | Space Saving Keyboard |
| 25 | 8525-004 | Intel 8086 | 8 (no wait states) | ISA, 8-bit | 2 | 2 | One 720 KB | None | 512 KB | 640 KB | MCGA | 12-inch color | All-in-one | Template:Date table sorting | Space Saving Keyboard |
| IBM PS/2 Model 25 Collegiate | 8525-C02 | Intel 8086 | 8 (no wait states) | ISA, 8-bit | 2 | 2 | Two 720 KB drives | None | 640 KB | 640 KB | MCGA | 12-inch monochrome | All-in-one | Template:Date table sorting | Space Saving Keyboard; targeted at college students; bundled with official PS/2 Mouse and Windows 2.0 |
| Model | IBM P/N | Processor | Clock Speed (MHz) |
Bus | Expansion Slots |
Drive Bays |
FDD | HDD | Base RAM | Max RAM | Video Adapter | Monitor Option | Form Factor | Launch Date | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Server 85 | 9585-0X6 | i486SX | 33 | Micro Channel architecture, 32-bit | 8 | 7 | One 2.88 MB | SCSI: 104 MB | 8 MB | 64 MB | Super VGA | Optional | Tower | Template:Date table sorting |
Portables
| Model | IBM P/N | CPU | Clock Speed (MHz) |
Bus Type | Expansion Slots | Drive Bays | FDD | HDD | Base RAM | Max RAM | Video Adapter | Display Type | Form Factor | Release Date | Notes | Reference(s) |
|---|
8573-031 Intel i386 16 style="background:#CCF"|Micro Channel architecture,32-bit Two slots (one16-bit, one32-bit) 0 One1.44 MB 30 MB (ESDI) 2 MB 8 MB Video Graphics Array Monochrome gas plasma Portable Template:Date table sorting Supports optional i387 math co-processor slot IBM PS/2 P70 8573-061 Intel i386 20 style="background:#CCF"|MCA,32-bit Two slots (one16-bit, one32-bit) 0 One1.44 MB 60 MB (ESDI) 2 MB 8 MB VGA Monochrome gas plasma Portable Template:Date table sorting Includes optional math co-processor slot IBM PS/2 P75 8573-161 Intel i486 33 style="background:#CCF"|MCA,32-bit Four slots (two16-bit, two32-bit) 0 One1.44 MB 160 MB (SCSI) 4 MB 16 MB VGA Monochrome gas plasma Portable Template:Date table sorting IBM PS/2 L40 SX 8543-A44 Intel i386SX 20 style="background:#CFC"|ISA,16-bit 0 (one AT bus expansion port) 0 One1.44 MB 60 MB (IDE) 2 MB 18 MB VGA Monochrome LCD Laptop Template:Date table sorting IBM PS/2 N51SX 8551-033 Intel i386SX 16 style="background:#FFC"|Proprietary bus Two PC Card slots One1.44 MB 40 MB (IDE) 2 MB 10 MB Monochrome LCD Notebook Unknown IBM PS/2 N51SLC 8551-025 IBM386SLC 16 style="background:#FFC"|Proprietary Two PC Card slots One1.44 MB 80 MB (IDE) 2 MB 10 MB VGA Monochrome LCD Notebook Unknown ... (Additional notebook models with proprietary buses and monochrome LCDs omitted for brevity) ... IBM PS/2 CL57 SX 8554-045 IBM386SLC 16 style="background:#FFC"|Proprietary Two PC Card slots Unknown One1.44 MB 80 MB (IDE) 2 MB 16 MB VGA Color TFT display Laptop Unknown
Related systems
| Name | IBM P/N | CPU(s) | Clock Speed (MHz) |
Bus Type | Slots Count | Drive Bays Count | FDD | HDD | Base RAM Size | Max RAM Size | Video Adapter Type | Display Availability | Form Factor | Release Date | Remarks | Reference(s) |
|---|
|- Academic System |||6152-022 |||Intel80286, ROMP032 co-processor card |||10 (286 core) |||style="background:#CEF"|MCA bus,16-bit |||8 slots |||4 bays |||One1.44MB floppy drive |||20MB ST-506 hard disk drive |||2MB base RAM |||8MB max RAM |||VGA video adapter |||Optional monitor support |||Tower case |||Template:Date table sorting |||ROMP chip on daughterboard; cannot operate simultaneously with main286 processor | |- Academic System variants with similar specifications but varying RAM configurations and storage capacities continue here. |- |}
| Name | IBM P/N | Processor(s) | Clock Speed (MHz) | Bus Type | Slots | Drive Bays | FDD | HDD | Base RAM | Max RAM | Video Adapter | Monitor | Form Factor | Release Date | Notes |
|---|
|- IBM_7690 Clinical Workstation |||7690 |||Intel8086 |||8 (no wait states) |||style="background:#FCC"|ISA bus,8-bit |||4 slots |||0 bays |||One1.44MB floppy drive |||None |||640KB base RAM |||8MB max RAM |||MCGA video adapter |||Monochrome LCD display |||Mobile workstation form factor |||Template:Date table sorting |||Designed specifically for healthcare applications; pairs with IBM_7496 Executive Workstation |- EduQuest Thirty |||9603 |||IBM386SLC |||25 MHz |||style="background:#CFC"|ISA bus,16-bit |||4 slots |||2 bays |||One1.44MB floppy drive |||30MB IDE hard disk drive |||1–4MB base RAM |||20MB max RAM |||SVGA video adapter |||14-inch color display |||All-in-one design |||Template:Date table sorting |||Education-focused adaptation of Model25; optional sound card available; later versions lack IBM branding |- EduQuest Forty ... [Similar educational adaptations of Model25 series with ISA buses and SVGA graphics continue] |- IBM_7496 Executive Workstation ... [Healthcare-oriented all-in-one system paired with Clinical Workstation] |- GE Fanuc Workmaster II ... [Ruggedized industrial portable PC branded by General Electric FANUC] |- Industrial Computer Series ... [Ruggedized modular industrial PCs featuring combinations of MCA and ISA buses in benchtop or rack-mount formats introduced from mid-to-late1980s] |- Personal Typing System series ... [Desktop word processing systems based on Intel8086 or80286 CPUs with ISA buses designed for office environments requiring dedicated typing solutions] |}