IBM PS/2 - 8525, 8530 - IDE (44-Pin) HDD Connector.
Pin
Signal Name
Pin
Signal Name
1
-RESET
2
-Disk Installed
3
Data Bit 0
4
Ground
5
Data Bit 1
6
Ground
7
Data Bit 2
8
Ground
9
Data Bit 3
10
Ground
11
Data Bit 4
12
Ground
13
Data Bit 5
14
Ground
15
Data Bit 6
16
Ground
17
Data Bit 7
18
Ground
19
-IOR
20
Ground
21
-IOW
22
Ground
23
-CS1FX
24
Ground
25
Addr Bit 0
26
Ground
27
Addr Bit 1
28
Ground
29
Addr Bit 2
30
+5Vdc
31
reserved
32
+5Vdc
33
-DACK 3
34
Ground
35
DRQ 3
36
Ground
37
IRQ 5
38
Ground
39
I/O Ready
40
+12Vdc
41
spare
42
+12Vdc
43
spare
44
+12Vdc
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