HP xw4400 Service And Technical Reference Manual page 174

ATA/ATAPI (IDE) standard drive cable connector
Pin
1 2 3 Reset Ground
4 5 DD7 DD8 DD6
6 7 8 DD9 DD5 DD10
9 10 DD4 DD11
11 12 DD3 DD12 DD2
13 14 DD13
24-Pin Main power connector P1
13
1
1 +3.3 V
2 +3.3 V
3 GND
4 +5 V
5 GND
6 +5 V
7 GND
CAUTION
Express x16 graphics card and which power cable connects to the system board. These two
cables have different pin counts and different colors. The PCI Express power cable has a 6-pin
black connector, and the system board power cable has an 8-pin white connector. When power
is present, you must never connect the PCI Express power cable to the system board. If you do
so, the system board may be damaged and your warranty voided.
164 Appendix C Appendix C — Connector pins
Signal Pin
15 16
17 18
19
20 21
22 23
24
25 26
27 28
8 POK
9 +5 Vaux
10 +12 V-B
11 +12 V-A
12 +3.3 V
13 +3.3 V
+3.3V-Rsense
Be sure you can differentiate between which power cable connects to the PCI
Signal Pin
DD1 DD14 DD0 29 30
DD15 Ground 31 32
33
(Key) DMARQ 34 35
Ground DIOW 36 37
Ground 38
DIOR Ground 39 40
IORDY CSEL
24
12
14 -12 VL 21
15 GND 22
16 PS_O
N_l
17 GND 23
18 GND 24
19 GND
20 GND
Signal
DMAK Ground INTRQ
IOCS16 DA1
PDIAG (cable detect) DA0
DA2 CS1FX CS3FX
DASP Ground
+5 V GND
+5 V and
+5 V-Rsense
+5 V
GND
ENWW