Hardware Reference
In-Depth Information
Figure 7.3. PATA (IDE) 40-pin interface connector detail.
Table 7.3
shows the standard 40-pin PATA (IDE) interface connector pinout.
Table 7.3. Pinout for the 40-Pin PATA Connector
The 2 1/2-inch drives found in notebook/laptop-size computers typically use a smaller unitized 50-
pin header connector with pins spaced only 2.0mm (0.079 inches) apart. The main 40-pin part of the
connector is the same as the standard PATA connector (except for the physical pin spacing), but there
are added pins for power and jumpering. The cable that plugs into this connector typically has 44
pins, carrying power as well as the standard ATA signals. The jumper pins usually have a jumper on
them (the jumper position controls cable select, master, or slave settings).
Figure 7.4
shows the
unitized 50-pin connector used on the 2 1/2-inch PATA drives in laptop or notebook computers.
