HP xw8400 Service And Technical Reference Manual page 167

ATA/ATAPI (IDE) standard drive cable connector
Pin Signal
1 Reset
2 GND
3 DD7
4 DD8
5 DD6
6 DD9
7 DD5
8 DD10
9 DD4
10 DD11
11 DD3
12 D12
13 D2
14 D13
24-Pin Main power connector
13
1
1 +3.3 V
2 +3.3 V
3 GND
4 +5 V
5 GND
6 +5 V
7 GND
ENWW
Pin Signal
15 DD1
16 DD14
17 DD0
18 DD15
19 GND
20 (Key)
21 DMARQ
22 GND
23 DIOW
24 GND
25 DIOR
26 GND
27 IORDY
28 CSEL
8 POK
9 +5 Vaux
10 +12 V-A
11 +12 V-A
12 +3.3 V
13 +3.3 V/+3.3 V-Rsense
Pin Signal
29 DMAK
30 GND
31 INTRQ
32 IOCS16
33 DA1
34 PDIAG (cable detect)
35 DA0
36 DA2
37 CS1FX
CS3FX
38
39 DASP
40 GND
24
12
14 -12 V
15 GND
16 PS_ON_L
17 GND
18 GND
19 GND
20
21 +5 V
22 +5 V/+5 V-Rsense
23 +5 V
24 GND
Connector pin descriptions 159