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Compaq Portable III keyboard pinout


Experienced Member
Jan 17, 2011
The Netherlands
Well, just switched pins 1-3 and 4-5 and now I have "Keyboard or system unit error". And the boot goes to DOS but no keyboard life at all.

Maybe I screwed the controller chip? I switched the pins one by one. So first 4-5 but still got "Keyboard error, press F1 to continue" but without the "stuck key beeps". And I thought that 1-3 would be wrong since pin 2 is always the middle one. And after switching those I got the unit error. Now I have no idea, there's only 5 pins... Can't be that hard right?