Main Power Connector; Atx12V Power Connector - Intel D945PWM Technical Product Specification

Intel Desktop Board D945PWM Technical Product Specification
2.8.2.2 Power Supply Connectors
The board has power supply connectors:
•
Main power – a 2 x 12 connector. This connector is compatible with 2 x 10 connectors
previously used on Intel Desktop boards. The board supports the use of ATX12V power
supplies with either 2 x 10 or 2 x 12 main power cables. When using a power supply with a
2 x 10 main power cable, attach that cable on the rightmost pins of the main power connector,
leaving pins 11, 12, 23, and 24 unconnected.
•
ATX12V power – a 2 x 2 connector. This connector provides power directly to the processor
voltage regulator and must always be used. Failure to do so will prevent the board from
booting.
INTEGRATOR'S NOTE
When using high wattage PCI Express x16 graphics cards, use a power supply with a 2 x 12 main
power cable. The 2 x 12 main power cable can provide up to 144 W of power from the +12 V rail.
Table 22.

Main Power Connector

Pin Signal Name
1 +3.3 V
2 +3.3 V
3 Ground
4 +5 V
5 Ground
6 +5 V
7 Ground
8 PWRGD (Power Good)
9 +5 V (Standby)
10 +12 V
11 +12 V
12 2 x 12 connector detect
Note: When using a 2 x 10 power supply cable, this pin will be unconnected.
Table 23.

ATX12V Power Connector

Pin Signal Name
1 Ground
3 +12 V
54
(Note)
(Note)
Pin Signal Name
13 +3.3 V
14 -12 V
15 Ground
16 PS-ON# (power supply remote on/off)
17 Ground
18 Ground
19 Ground
20 No connect
21 +5 V
22 +5 V
(Note)
23 +5 V
(Note)
24 Ground
Pin Signal Name
2 Ground
4 +12 V