Hardware Reference
In-Depth Information
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
largerdrivesthattypicallyuse12Vmotors),andpin43providesapowerground.Thelast
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
