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Connections and Jumper Blocks
Figure 15. Connection Diagram for Front Panel USB Connectors
6.1.4
Power Supply Connectors
The board has three power supply connectors:
•
Main power – a 2 x 12 connector. This connector is compatible with 2 x 10 connectors
previously used on Intel® Server boards. The board supports the use of ATX12V or
EPS 12V 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 right most
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.
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
36
Power
(+5 V DC)
D−
One
USB
Port
D+
Ground
Key (no pin)
Table 20. Main Power Connector
Intel® Entry Server Board SE7221BA1-E TPS
Power
1
2
(+5 V DC)
D−
3
4
D+
5
6
7
8
Ground
10
No Connect
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
One
USB
Port
OM15963
Revision 1.5
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