DEC AlphaServer 1000A Owner's Manual page 186

SCSI Port Connector
The external, narrow SCSI connector is a 50-pin high-density connector. Table 9-5
lists the pin assignments.
Table 9-5 SCSI Port Pinouts
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
9-10 Quick Reference
Signal Pin
GND 26
GND 27
GND 28
GND 29
GND 30
GND 31
GND 32
GND 33
GND 34
GND 35
GND 36
RESERVED 37
OPEN 38
RESERVED 39
GND 40
GND 41
GND 42
GND 43
GND 44
GND 45
GND 46
GND 47
GND 48
GND 49
GND 50
Signal
-DB (0)
-DB (1)
-DB (2)
-DB (3)
-DB (4)
-DB (5)
-DB (6)
-DB (7)
-DB (P)
GND
GND
RESERVED
TERMPWR
RESERVED
GND
-ATN
GND
-BSY
-ACK
-RST
-MSG
-SEL
-CD
-REQ
-I/O
AlphaServer 1000A Owner's Guide