Intel DH77DF Technical Product Specification - Page 55

Add-in Card Connectors, 2.3.3, Power Supply Connectors

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Technical Reference 2.2.3.2 Add-in Card Connectors The board has the following add-in card connectors: • One PCI Express x16 (3.0/2.x/1.x) • One PCI Express Full-/Half-Mini Card with support for mSATA NOTE PCI Express 3.0 is only supported by 3rd generation Intel Core processor family processors. 2.2.3.3 Power Supply Connectors The board has the following 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 to the main power connector, leaving pins 11, 12, 23, and 24 unconnected. • Processor core 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. Table 30. Processor Core Power Connector Pin Signal Name 1 Ground 3 +12 V Pin Signal Name 2 Ground 4 +12 V Table 31. Main Power Connector Pin Signal Name Pin Signal Name 1 +3.3 V 13 +3.3 V 2 +3.3 V 14 -12 V 3 Ground 15 Ground 4 +5 V 16 PS-ON# (power supply remote on/off) 5 Ground 17 Ground 6 +5 V 18 Ground 7 Ground 19 Ground 8 PWRGD (Power Good) 20 No connect 9 +5 V (Standby) 21 +5 V 10 +12 V 11 +12 V (Note) 12 2 x 12 connector detect (Note) 22 +5 V 23 +5 V (Note) 24 Ground (Note) Note: When using a 2 x 10 power supply cable, this pin will be unconnected. For information about Power supply considerations Refer to Section 2.5.1 on page 62 55

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Technical Reference
55
2.2.3.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
One PCI Express x16 (3.0/2.x/1.x)
•
One PCI Express Full-/Half-Mini Card with support for mSATA
NOTE
PCI Express 3.0 is only supported by 3
rd
generation Intel Core processor family
processors.
2.2.3.3
Power Supply Connectors
The board has the following 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 to the main
power connector, leaving pins 11, 12, 23, and 24 unconnected.
•
Processor core 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.
Table 30.
Processor Core Power Connector
Pin
Signal Name
Pin
Signal Name
1
Ground
2
Ground
3
+12 V
4
+12 V
Table 31.
Main Power Connector
Pin
Signal Name
Pin
Signal Name
1
+3.3 V
13
+3.3 V
2
+3.3 V
14
-12 V
3
Ground
15
Ground
4
+5 V
16
PS-ON# (power supply remote on/off)
5
Ground
17
Ground
6
+5 V
18
Ground
7
Ground
19
Ground
8
PWRGD (Power Good)
20
No connect
9
+5 V (Standby)
21
+5 V
10
+12 V
22
+5 V
11
+12 V
(Note)
23
+5 V
(Note)
12
2 x 12 connector detect
(Note)
24
Ground
(Note)
Note:
When using a 2 x 10 power supply cable, this pin will be unconnected.
For information about
Refer to
Power supply considerations
Section 2.5.1 on page 62