Intel D925XECV2 Product Specification - Page 75

Add-in Card Connectors

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Technical Reference Table 29. 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 2x12 connector detect 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 23 +5 V 24 Ground Table 30. ATX12V Power Connector Pin Signal Name 1 Ground 3 +12 V Pin Signal Name 2 Ground 4 +12 V Table 31. Alternate Power Connector Pin Signal Name 1 +12 V 2 Ground 3 Ground 4 +5 V 2.8.2.2 Add-in Card Connectors The board has the following add-in card connectors: • PCI Express x16: one connector supporting simultaneous transfer speeds up to 8 GBytes/sec • PCI Express x1: the D925XECV2 board has two PCI Express x1 connectors; the D925XEBC2 board has one PCI Express x1 connector. The x1 interfaces support simultaneous transfer speeds up to 500 MBytes/sec. • PCI Conventional (rev 2.2 compliant) bus: the D925XECV2 board has four PCI Conventional bus add-in card connectors; the D925XEBC2 board has two PCI Conventional add-in card connectors. The SMBus is routed to PCI Conventional bus connector 2 only (ATX expansion slot 6). PCI Conventional bus add-in cards with SMBus support can access sensor data and other information residing on the Desktop Board. 75

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Technical Reference
75
Table 29.
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
23
+5 V
12
2x12 connector detect
24
Ground
Table 30.
ATX12V Power Connector
Pin
Signal Name
Pin
Signal Name
1
Ground
2
Ground
3
+12 V
4
+12 V
Table 31.
Alternate Power Connector
Pin
Signal Name
1
+12 V
2
Ground
3
Ground
4
+5 V
2.8.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
PCI Express x16:
one connector supporting simultaneous transfer speeds up to 8 GBytes/sec
•
PCI Express x1:
the D925XECV2 board has two PCI Express x1 connectors; the D925XEBC2
board has one PCI Express x1 connector.
The x1 interfaces support simultaneous transfer
speeds up to 500 MBytes/sec.
•
PCI Conventional (rev 2.2 compliant) bus:
the D925XECV2 board has four PCI Conventional
bus add-in card connectors; the D925XEBC2 board has two PCI Conventional add-in card
connectors.
The SMBus is routed to PCI Conventional bus connector 2 only (ATX expansion
slot 6)
.
PCI Conventional bus add-in cards with SMBus support can access sensor data and
other information residing on the Desktop Board.