Rare vintage 486sx Mother board Rev 4.1 on board Tseng let's ET 4000AX vgal Riser& Ram

Listing 4: Vintage IBM PS/2 Model 60 Motherboard (System Board)

 

This is a high-end vintage system board from the IBM PS/2 Model 60 series. It is a rare find for collectors of early Micro Channel

 

Architecture (MCA) systems.

 

System Origin: IBM Personal System/2 (PS/2) Model 60 (Type 8560).

 

Key Integrated Chips:

 

Adaptec AIC-6060Q:

 

High-performance disk controller chip.

 

Motorola SC80596FN: A specialized processor often used in IBM's proprietary system management and I/O handling.

 

PMI PM7628FS: Dual 8-bit DAC (Digital-to-Analog Converter).

 

Expansion Architecture: Features IBM's proprietary Micro Channel Architecture (MCA) slots.・ソ

 

System Origin: IBM Personal System/2 (PS/2) Model 60 (Type 8560).

 

Key Integrated Chips:

 

Adaptec AIC-6060Q:

 

High-performance disk controller chip.

 

Motorola SC80596FN: A specialized processor often used in IBM's proprietary system management and I/O handling.

 

PMI PM7628FS: Dual 8-bit DAC (Digital-to-Analog Converter).

 

Expansion Architecture: Features IBM's proprietary Micro Channel Architecture (MCA) slots.

 

Board Markings: Labeled with "PCBA ASSY IN" and "UP LEVEL" tracking stickers.

 

Condition: Clean vintage board; features original tantalum capacitors and high-quality socketed chips.

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