Hardware Reference
In-Depth Information
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 con-
trols cable select, master, or slave settings).
Figure 7.4
shows the unitized 50-pin connect-
or used on the 2 1/2-inch PATA drives in laptop or notebook computers.
Figure 7.4
The 50-pin unitized PATA connector detail (used on 2 1/2-inch notebook/laptop PATA drives
with a 44-pin cable).
