On Thu, 27 Sep 2001, Mark K. Kim wrote: > So ATA66 also uses the 80-wire cable... so how does one distinguish ATA100 > from ATA66 cables? (That is, besides reading the label, if any is attached > :)
The way I understand it, there are two types of cables: 80 and 40 wire versions. Any 80-wire IDE cable is equivalent to any other, discounting the construction quality. According to http://www.mathercomputers.com/supportbb-fresh.html, you may in some cases find problems using the 80 wire cables with UDMA33, so you are safer using 80-wire cables for 66 and 100, and 40 wire cables for any old hardware you have. I imagine the backward incompatibility has to do with the lower impedance of the 80 wire cable. > > -Mark > > On Thu, 27 Sep 2001, Jeff Newmiller wrote: > > > On Thu, 27 Sep 2001, Mark K. Kim wrote: > > > > > Well, I bought the motherboard that came with the blue IDE connector > > > before ATA100 came into standard. Maybe the mobo guys saw that the cable > > > be useful with at-the-time-draft-probably ATA100 but I doubt it... > > > > http://www.directron.com/faqata66.html > > > > It is apparently more than just insurance. > > > > > > > > -Mark > > > > > > On Wed, 26 Sep 2001, Jeff Newmiller wrote: > > > > > > > On Wed, 26 Sep 2001, Mark K. Kim wrote: > > > > > > > > > We have a computer at work with ATA100 connection. The wires *are* > > > > > significantly smaller compared to non-ATA100 and does have blue connector > > > > > ends, though the ends fit non-ATA100 devices... But my ATA66 also has a > > > > > blue connector end. > > > > > > > > I think the 80 conductor cable can be used just fine at lower speeds, and > > > > it is insurance for UDMA66. > > > > --------------------------------------------------------------------------- > > Jeff Newmiller The ..... ..... Go Live... > > DCN:<[EMAIL PROTECTED]> Basics: ##.#. ##.#. Live Go... > > Live: OO#.. Dead: OO#.. Playing > > Research Engineer (Solar/Batteries O.O#. #.O#. with > > /Software/Embedded Controllers) .OO#. .OO#. rocks...2k > > --------------------------------------------------------------------------- > > > > -- > Mark K. Kim > http://www.cbreak.org/mark/ > PGP key available upon request. > > --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<[EMAIL PROTECTED]> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...2k ---------------------------------------------------------------------------
