The A590 was an external hard disk for the Amiga 500, in 'sidecar' form factor, that could also hold an extra megabyte of RAM.

How many 590s were sold, throughout its life?

  • 4
    A590 supports up to 2MB RAM.
    – Brian H
    Commented Feb 20, 2020 at 16:16
  • 1
    I remember it had an average seek time of 80ms highest I saw for a hard drive!
    – nsandersen
    Commented Feb 21, 2020 at 10:06
  • 1
    @nsandersen most Western Digital hard drives of that era were around 80ms. But they weren't the slowest. alyon.org/InfosTechniques/informatique/drives/other/… Commented Feb 23, 2020 at 3:13
  • 4
    @nsandersen the 80 ms seek time was for the included 20 MB XT IDE HD. The A590 also supported SCSI, so all the hip kids (plus me) put a 52 or 80 MB Quantum in it. They were pretty fast
    – scruss
    Commented Feb 23, 2020 at 16:35


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