Atx12V Power Connector; Rear Chassis Fan Connector; Processor Fan Connector - Intel D845PEBT2 Specification

✏
NOTE
Do not use a standard ATX power supply. The Desktop Board D845PEBT2 will not boot with a
standard ATX power supply. Use only ATX12V-compliant power supplies with the Desktop Board
D845PEBT2. ATX12V power supplies have an additional power lead that provides required
supplemental power for the Intel Pentium 4 processor. The Desktop Board D845PEBT2 will not
boot if the ATX12V power supply is not connected to both the 4-pin and 20-pin power connectors.
For information about
The power connector
The functions of the fan connectors
Table 30.

ATX12V Power Connector

Pin Signal Name
1 Ground
3 +12 V
Table 31.

Rear Chassis Fan Connector

Pin Signal Name
1 Control
2 VREG_12V_POWER
3 REAR_FAN_TACH
Table 32.

Processor Fan Connector

Pin Signal Name
1 Control
2 +12 V
3 CPU_FAN_TACH
Refer to
Section 1.16.2.1, page 41
Section 1.16.2.2, page 41
Pin Signal Name
2 Ground
4 +12 V
Technical Reference
59