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40 Pins / 80 Wires
As ID transfer rates kept
increasing, the limitations of the 40-pin cable
became an issue. The solution was to add a ground
wire between each signal carrying line on the 40-pin
cable. This extra ground wire absorbs crosstalk. Crosstalk
is any stray signal that 'leaks' from the original wire. Pin
34 on the motherboard side can determine if the 80-conductor
cable is present.
Standardization Comes to IDE Cable (Finally)
Another feature of this new cable is color-coding the connectors. The new coding scheme is as follows:
Blue: This connector is attached to the motherboard (or host adaptor).
Gray: This accepts the secondary drive (if it exists).
Black: This accepts the first (or only) drive.
The color-coding came about because if a single drive was placed in the middle of the cable, it could cause signal issues. Before, this was considered not advisable. Now it is flat out illegal.
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CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004
Adapted with permission from a work created by Tcat Houser.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
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