IBM Ultrastar 36LZX Specifications page 29

7.1.2.2 SCSI signal connector (80 pin SCA-2 model)
The 80 pin SCA-2 model uses a DDK connector which is compatible with SPI-3.
Connector contact
number
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Figure 20. Table of signals
NOTE*1: HVD is not supported.
NOTE: SCA-2 connector is not mechanically compatible with the 68 pin "P" connector as defined in the
ANSI SCSI standard. The connector is intended for direct back plane attachment and is not intended to
be cable attached to the bus.
Signal name
12 Volt Charge
12 Volt
12 Volt
12 Volt
Opt 3.3 V/NC
Opt 3.3 V/NC
-DB(11)
-DB(10)
-DB(9)
-DB(8)
-I/O
-REQ
-C/D
-SEL
-MSG
-RST
-ACK
-BSY
-ATN
-P_CRCA
-DB(7)
-DB(6)
-DB(5)
-DB(4)
-DB(3)
-DB(2)
-DB(1)
-DB(0)
-DB(P1)
-DB(15)
-DB(14)
-DB(13)
-DB(12)
5 Volt
5 Volt
5 Volt Charge
Spindle Sync/NC
RMT START
SCSI ID (0)
SCSI ID (2)
Ultrastar 36LZX hard disk drive specifications
Connector contact
number
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
29
Signal name
12V Ground
12V Ground
12V Ground
MATED 1
Opt 3.3 V charge/NC
DIFFSENS(*1)
+DB(11)
+DB(10)
+DB(9)
+DB(8)
+I/O
+REQ
+C/D
+SEL
+MSG
+RST
+ACK
+BSY
+ATN
+P_CRCA
+DB(7)
+DB(6)
+DB(5)
+DB(4)
+DB(3)
+DB(2)
+DB(1)
-DB(0)
+DB(P1)
+DB(15)
+DB(14)
+DB(13)
+DB(12)
MATED 2
5V Ground
5V Ground
ACTIVE LED OUT
DELAYED START
SCSI ID (1)
SCSI ID (3)