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2 ST43401N/ND, ST43402ND User’s Manual, Rev. B
Control
Board
Chassis
Head and Disc
Assembly (HDA)
Power
Board
DC Power
Connector
Option
Jumpers
Pin 1
I/O
Board
Optional
Bezel
Spindle Sync
Connector
Remote Operator
Panel Connector
Port B
I/O Connector
Port A
I/O Connector
Port A
Terminator
Power
Port B
Terminator
Power
Option
Jumpers
I/O Board
Power
Figure 2. The ST43402ND disc drive