Hardware Reference
In-Depth Information
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).
Note the jumper pins at positions A-D; also notice that the pins at positions E and F are removed. A
jumper usually is placed between positions B and D to set the drive for cable select operation. On
this connector, pin 41 provides +5V power to the drive logic (circuit board), pin 42 provides +5V
power to the motor (2 1/2-inch drives use 5V motors, unlike larger drives that typically use 12V
motors), and pin 43 provides a power ground. The last pin (44) is reserved and not used.
Table 7.4
shows the 50-pin unitized PATA interface connector pinout as used on most 2 1/2-inch
(laptop or notebook computer) drives.
Table 7.4. The 50-Pin Unitized PATA 2 1/2-Inch (Notebook/Laptop Drive) Connector Pinout
Note
