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Hard Disk Connector #1 (J3) - Pinout
Pin
Signal
Number
Flow
1
I
3
I/O
5
I/O
7
I/O
9
I/O
11
I/O
13
I/O
15
I/O
17
I/O
19
-
21
O
23
I
25
I
27
O
29
O
31
O
33
I
35
I
37
I
39
O
* Active low signal
Appendices
18-30
Signal
Pin
Number
RESET*
2
SD7
4
SD6
6
SD5
8
SD4
10
SD3
12
SD2
14
SD1
16
SD0
18
GND
20
REQ A
22
IOW*
24
IOR*
26
IOCHRDY*
28
DACK A*
30
IRQ14
32
SA1
34
SA0
36
CS0 A*
38
ACTIVE*
40
Signal
Signal
Flow
-
GND
I/O
SD8
I/O
SD9
I/O
SD10
I/O
SD11
I/O
SD12
I/O
SD13
I/O
SD14
I/O
SD15
-
Not Used
-
GND
-
GND
-
GND
-
Not Used
-
GND
O
IOCS16*
-
Not Used
I
SA2
I
CS1 A*
-
GND
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