
Chapter 2 External Connectors
Pin Number
Signal
Description
Pin
Number
Signal
Description
34 +DB(11) 68 -DB(11)
50-Pin Narrow SCSI Port Connector – Accessory Board
Position 25 Position 1
Position 26Position 50
SCSI Port Connector
50-Pin Narrow SCSI Port Connector Pinouts
Pin Number Signal Description Pin Number Signal Description
1-11 Ground 37 Reserved
12 Reserved 38 Termpwr
13 Open 39 Reserved
14 Reserved 40 Ground
15-25 Ground 41 -ATN
26 -DB(0) 42 Ground
27 -DB(1) 43 -BSY
28 -DB(2) 44 -ACK
29 -DB(3) 45 -RST
30 -DB(4) 46 -MSG
31 -DB(5) 47 -SEL
32 -DB(6) 48 -C/D
33 -DB(7) 49 -REQ
34 -DB(P) 50 -I/O
35-36 Ground
12
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