Intel DH77DF Technical Product Specification - Page 39

Power Connector, 11.2.2, Fan Headers - wake up on usb settings

Get Intel DH77DF PDF manuals and user guides View all Intel DH77DF manuals
Add to My Manuals
Save this manual to your list of manuals

Page 39 highlights

Product Description NOTE The use of Wake from USB from an ACPI state requires an operating system that provides full ACPI support. 1.11.2.1 Power Connector ATX12V-compliant power supplies can turn off the system power through system control. When an ACPI-enabled system receives the correct command, the power supply removes all non-standby voltages. When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (on or off). The computer's response can be set using the Last Power State feature in the BIOS Setup program's Boot menu. For information about The location of the main power connector The signal names of the main power connector Refer to Figure 11, page 47 Table 31, page 55 1.11.2.2 Fan Headers The function/operation of the fan headers is as follows: • The fans are on when the board is in the S0 state • The fans are off when the board is off or in the S3, S4, or S5 state • Each fan header is wired to a fan tachometer input of the hardware monitoring and fan control ASIC • All fan headers support closed-loop fan control that can adjust the fan speed or switch the fan on or off as needed • All fan headers have a +12 V DC connection • The fan headers are controlled by Pulse Width Modulation For information about The location of the fan headers The location of the fan headers and sensors for thermal monitoring Refer to Figure 11, page 47 Figure 7, page 35 39

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
Product Description
39
NOTE
The use of Wake from USB from an ACPI state requires an operating system that
provides full ACPI support.
1.11.2.1
Power Connector
ATX12V-compliant power supplies can turn off the system power through system
control.
When an ACPI-enabled system receives the correct command, the power
supply removes all non-standby voltages.
When resuming from an AC power failure, the computer returns to the power state it
was in before power was interrupted (on or off).
The computer’s response can be set
using the Last Power State feature in the BIOS Setup program’s Boot menu.
For information about
Refer to
The location of the main power connector
Figure 11, page 47
The signal names of the main power connector
Table 31, page 55
1.11.2.2
Fan Headers
The function/operation of the fan headers is as follows:
•
The fans are on when the board is in the S0 state
•
The fans are off when the board is off or in the S3, S4, or S5 state
•
Each fan header is wired to a fan tachometer input of the hardware monitoring and
fan control ASIC
•
All fan headers support closed-loop fan control that can adjust the fan speed or
switch the fan on or off as needed
•
All fan headers have a +12 V DC connection
•
The fan headers are controlled by Pulse Width Modulation
For information about
Refer to
The location of the fan headers
Figure 11, page 47
The location of the fan headers and sensors for thermal monitoring
Figure 7, page 35