What was your very first computer ... ?

Mine:

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[youtube=https://www.youtube.com/watch?v=v2ZeVXohSyo]

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After some various research I think it was most likely a Macintosh Quadra 950. I still remember the startup sound (0:13).
[youtube=https://www.youtube.com/watch?v=EB1lOLnWh-c]