Advantech HPC-2820-ISSE, User Manual, Page: 80 / 178

4-16 Chapter 4: Motherboard information
10.. SSI.power.connectors.(24-pin.ATXPWR1,.8-pin.ATX12V1,.4-pin.ATX12V2)
These connectors are for SSI power supply plugs. The power supply plugs
are designed to fit these connectors in only one orientation. Find the proper
orientation and push down firmly until the connectors completely fit.
• For a fully configured system, we recommend that you use an SSI
12 V-compliant power supply unit (PSU) for LGA771-socket Intel
®
Xeon
Dual Core processors (Bensley platform).
• Do not forget to connect the 24+8+4-pin power plugs; otherwise, the
system will not boot up.
• Use of a PSU with a higher power output is recommended when
configuring a system with more power consuming devices. The system may
become unstable or may not boot up if the power is inadequate.
• You must install a PSU with a higher power rating if you intend to install
additional devices.
®
ATX power connectors
8-pin
GND
12V2
GND
12V2
GND
12V1
GND
12V1
24-pin Power Connector
ATXPWR1
ATX12V1
4-pin
ATX12V2
+3
Vo
lts
+3
Vo
lts
5
Vo
lts
+5
Vo
lts
Ground Ground Power OK +5V S12
Vo
lts
-5
Vo
lts
+5
Vo
lts
+3
Vo
lts
-1
2
Vo
lts
Ground Ground Ground PSON
#
Ground
+5
Vo
lts
+12
Vo
lts
+3
Vo
lts
+5
Vo
lts
Ground
+12V DC GND
+12V DC GND