Re: Can an ATA100 pin be cut so ATA133 cables will work?

From: VWWall (vwall_at_DEADearthlink.net)
Date: 03/07/04 

Date: Sun, 07 Mar 2004 02:05:28 GMT

Tech Support for IDE-CF wrote:

> mru@kth.se (Måns Rullgård) wrote in message news:<yw1x7jxycn3e.fsf@kth.se>...
>
>>Larry Alkoff <nobody@nowhere.com> writes:
>>
>>
>>>I have a number of ATA100 removable drive enclosures for IDE drives
>>>that have 40 pin connectors. However the ATA133 cables I'd like to
>>>use have one of those pins cut off - specifically the bottom middle
>>>pin.
>
>
> If you mean the "key" pin, yes.
>
>
>>>I'd like to cut this off so I can use the ATA133 cables but will this
>>>affect the operation with ATA100 drives?
>>
>>It's safer to make a hole in the plug on the cable.
>
>
> To do so would defeat the purpose of the "key" pin. I.e. plugging it
> into an non ATA/IDE device. But anyway, it's hard to find any non
> ATA/IDE device with 40 pins nowaday.
>
> Actually, we are thinking about going one step further. By
> cutting/blocking one more pin, we can avoid plugging the cable
> backward (pin 1 vs. pin 40). We are just wondering which pin to cut
> (on the header) and block (on the cable).

Explain why cutting pin 20 on the header doesn't acconplish this? A
cable with only hole 20 blocked will fit only one way. The spec also
calls for a plastic side lug on the plug.

Virg Wall 

-- 
                 It is vain to do with more
                 what can be done with fewer.
                            William of Occam.

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