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The go-to place for all IBM PS/2 and Micro Channel enthusiasts
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PS/2 Family Overview
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Models 25 - 40 feature 8- or 16-bit ISA bus and 8086, 286, or 386SX CPU.
Models 50 - 65 feature 16-bit MCA bus and 286, 386SX, 486SLC2, or 486SLC3 CPU.
Models 70 - 95 feature 32-bit MCA bus and 386DX, 486SX/DX/DX2/DX4, or Pentium CPU.
| Type | Name | Form Factor | Architecture | CPU |
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| Machines w/ ISA Bus |
| 8525 | Model 25 | All-in-One | ISA 8-bit | 8086 |
| 8525 | Model 25 286 | All-in-One | ISA 16-bit | 286 |
| 8525 | Model 25 SX | All-in-One | ISA 16-bit | 386SX |
| 8530 | Model 30 | Desktop (D1) | ISA 8-bit | 8086 |
| 8530 | Model 30 286 | Desktop (D1B) | ISA 16-bit | 286 |
| 8533 | Model N33 SX | Notebook | ISA 16-bit | 386SX |
| 8535 | Model 35 | Desktop (D3) | ISA 16-bit | 386SX |
| 8540 | Model 40 | Desktop (D4) | ISA 16-bit | 386SX/SLC |
| 8543 | L40SX | Laptop | ISA 16-bit | 386SX |
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| 9533 | PS/2 E | Small Fprt. (SF) | ISA 16-bit | 486SLC2 |
| Machines w/ 16-bit MCA Bus |
| 8550 | Model 50, 50Z | Desktop (D2) | MCA 16-bit | 286 |
| 8551 | Model N51 | Notebook | MCA 16-bit | 386SX/SLC |
| 8554 | CL57 | Laptop | MCA 16-bit | 386SX |
| 8555 | Model 55 SX | Desktop (D1B) | MCA 16-bit | 386SX |
| 8556 | Model 56 | Desktop (D3) | MCA 16-bit | 386SX/SLC |
| 8557 | Model 57 | Desktop (D4) | MCA 16-bit | 386SX/SLC |
| 8560 | Model 60 | Tower (T1) | MCA 16-bit | 286 |
| 8565 | Model 65 SX | Tower (T1) | MCA 16-bit | 386SX |
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| 9553 | Model 53 | Desktop (D1C) | MCA 16-bit | 486SLC2 |
| 9556 | Model 56 SLC2/3 | Desktop (D3) | MCA 16-bit | 486SLC2/SLC3 |
| 9557 | Model 57 SLC2/3 | Desktop (D4) | MCA 16-bit | 486SLC2/SLC3 |
| Machines w/ 32-bit MCA Bus |
| 8570 | Model 70 | Desktop (D2) | MCA 32-bit | 386, 486 |
| 8573 | Model P70 | Luggable | MCA 32-bit | 386DX |
| 8573 | Model P75 | Luggable | MCA 32-bit | 486DX |
| 8580 | Model 80 | Tower (T1) | MCA 32-bit | 386DX |
| 8590 | Model 90 XP | Desktop (D5) | MCA 32-bit | 386DX, 486SX/DX/DX2, Pentium |
| 8595 | Model 95 XP | Tower (T2) | MCA 32-bit | 386DX, 486SX/DX/DX2, Pentium |
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| 9576 | Model 76 & 76 i/s | Desktop (D3) | MCA 32-bit | 486SX/DX2/DX4 |
| 9577 | Model 77 & 77 i/s | Desktop (D4) | MCA 32-bit | 486SX/DX2/DX4 |
| 9585 | Model 85 | Tower (T2) | MCA 32-bit | 486SX/DX2 |
| 9590 | Model 90 | Desktop (D5) | MCA 32-bit | 386DX, 486SX/DX/DX2, Pentium |
| 9595 | Model 95 (A) | Tower (T2) | MCA 32-bit | 386DX, 486SX/DX/DX2, Pentium |
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