NS PC87391

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NS PC87391

This is a National Semiconductor SuperIO chip

Note: National Semiconductor sold the SuperIO product line to Winbond Electronics


  • Serial
  • Parallel
  • Floppy
  • IrDA
  • PS/2 keyboard/mouse

Linux support

This chipset is supported by recent 2.4 and 2.6 kernels



ThinkPad's this chip may be found in