External drives are 50 pin scsi narrow.
Confusion:
The scsi cable connector on the back of the mac is a DB 25 pin connection.
Therefore you will need a 25 pin to 50 pin cable.
Although confusing,
this 25 to 50 thing has been a mac thing for a long time,
so lots of cables are available.
My advice:
Get an external at this time. This allows an easy way to boot, if the internal gets
goofed up.
Janice Best wrote:
> So if I get an external, it needs to be 25 pins, and if I get internal, it
> can be anything with the proper adaptor?
>
> I'd like to add a drive, not sure ...
> ... internal or external. I know external costs more. I
> found a site that shows how to add an internal, and a cooling fan ...
> http://www.geocities.com/glenstrek/7500_2nd_Drive.html
> Janice
>
> --
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