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26 ST43401N/ND, ST43402ND User’s Manual, Rev. B
Port A SCSI ID
Port A SCSI ID = 0
GND
A3 A1
A2 A0
SBSB3 B1
B2 B0
Port A SCSI ID = 1
Port A SCSI ID = 2
Port A SCSI ID = 3
Port A SCSI ID = 4
Port A SCSI ID = 5
Port A SCSI ID = 6
Port A SCSI ID = 7
Port A SCSI ID = 8
Port A SCSI ID = 9
Port A SCSI ID = A
Port A SCSI ID = B
Port A SCSI ID = C
Port A SCSI ID = D
Port A SCSI ID = E
Port A SCSI ID = F
Port B dictates Port A’s SCSI ID
(the drive ignores all Port A
jumpers and assigns Port A the
same SCSI ID as Port B)
GND
A3 A1
A2 A0
SBSB3 B1
B2 B0
= Jumper
connected
= Jumper not
connected
= Non-applicable jumper
(not relevant to the
option discussed)
J09
Ground (GND)
SCSI Bus Select Mode (SBS)
ID_A0 (A0)
ID_A1 (A1)
ID_A2 (A2)
ID_A3 (A3)
ID_B0 (B0)
ID_B1 (B1)
ID_B2 (B2)
ID_B3 (B3)
Port B SCSI ID
Port B SCSI ID = 0
Port B SCSI ID = 1
Port B SCSI ID = 2
Port B SCSI ID = 3
Port B SCSI ID = 4
Port B SCSI ID = 5
Port B SCSI ID = 6
Port B SCSI ID = 7
Port B SCSI ID = 8
Port B SCSI ID = 9
Port B SCSI ID = A
Port B SCSI ID = B
Port B SCSI ID = C
Port B SCSI ID = D
Port B SCSI ID = E
Port B SCSI ID = F
Port A SCSI ID Selectors
Port B SCSI ID Selectors
Pin 2
Pin 1
Figure 10. ST43402ND I/O board J09 jumpers