On Wed, 26 Sep 2001, Takashi Ishihara wrote:

> On Wed, Sep 26, 2001 at 10:35:34AM -0700, Peter Jay Salzman wrote:
> > how does one go about identifying flat ribbon cables that are capable of
> > supporting ATA/100 drive transfers?
> 
> Trial and fail in my case.
> 
> > i understand that these cables are different somehow (better shielding?)
> > but look exactly like the other cables which can only support ATA/66 and
> > ATA/33.   or am i wrong about this?
> 
> You're absolutely right.
> I guess the manufacturer of these cables just make it, test statistically,
> then if the batch pass the test, then it's 33/66/100 or whatever.
> I'm using old ide cable taken from old i486 mobo, and it still capable of
> 100 with a cheap hdd swap case. I have not noticed any problem so far.

My understanding is that the controller and disk will cooperate to confirm
that the high connection rate is possible, and (silently?) fall back to a
lower transfer rate if the high transfer rate doesn't work.

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