A udma cable has double the wires from the old/standard version. These are, to my understanding used to help with the signal. The extra wires are in between the data wires and are for the purpose of stopping signal leak/interferance between the wires (I think they are ground wires). Anyway, a udma66/100/133 cable can transmit the signal from a udma33 drive, it is backwards compatible, and of course a udma33 cable is incapable of utilizing the 66/100/133 Mb signal. I still think that having the mixed drives will limit the spec to the lower transfer rate none the less. Cheers, Curtis On Saturday 04 January 2003 07:45, Carlos E. R. wrote:
The 03.01.03 at 21:11, Curtis Rey wrote:
From what I understand anytime that you but a slower device (in throughput) the ide interface with always default to the slower speed. Makes sense since if you had a udma33 and a udma100 device the 33 speed can't run at 100 but the 100 can run at 33. I've heard that one should put the cdroms on on ide ribbon and the hdd's on another.
I don't have confirmation of that, but my educated guess is that what you say is true. My doubts arise from the fact that as the hardware can not talk to the drives simultanously, it could perhaps use different speeds for each one. But probably not.
After all, udma100 needs a different cable than for udma33.
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