HP Compaq dx7300 MT Reference Manual page 164

Connector Pin Assignments
24-Pin Power (CMT and MT models)
Pin Signal
1 +3.3 V
2 +3.3 V
3 GND
4 +5 V
5 GND
6 +5 V
24-Pin MicroFit Power (USDT, SFF, and ST models)
Pin Signal
1 +5 Vaux
2 GND
3 +5 V
4 +5 V
5 PS_ON
6 GND
4-Pin Power (for CPU) (MT and CMT models)
Connector and Icon
A–6
Connector
24
12
Pin Signal
7 GND
8 POK
9 +5 Vaux
10 +12 V
1 1 +12 V
12 +3.3 V
Connector
24
12
Pin Signal
7 PWRGD
8 +3.3 V
9 +3.3 V
10 Tach
1 1 GND
12 Fan-CMD
Pin
1
2
3
4
43361 1-001
13
1
Pin Signal
13 +3.3 V
14 - 1 2 V
15 GND
16 PSON
17 GND
18 GND
13
1
Pin Signal
13 +12 V
14 +5 V Sense
15 GND
16 +5 V
17 +5 V
18 +3.3 V
CMT and MT Signal
GND
GND
+12 V CPU
- 1 2 V CPU
Service Reference Guide, dx7300
Pin Signal
19 GND
20 open
21 +5 V
22 +5 V
23 +5 V
24 GND
Pin Signal
19 GND
20 +3.3 Sense
21 +3.3 V
22 +3.3 V
23 GND
24 - 1 2 V