Asus P5BV-C - Motherboard - ATX, User Manual

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2-28 Chapter 2: Hardware information
8. ATX power connectors (24-pin ATXPWR1, 4-pin ATX12V1)
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.
• Use of an ATX 12 V Specification 2.0-compliant power supply unit (PSU)
that provides a minimum power of 450 W is recommended for a fully-
configured system.
• Do not forget to connect the 4-pin or 8-pin ATX +12 V power plug.
Otherwise, the system will not boot up.
• We recommend that you use a PSU with a higher power output 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.
®
P5BV-C/4L
P5BV-C/4L ATX Power Connector
+3
Vo
lts
+3
Vo
lts
5
Vo
lts
+5
Vo
lts
Ground Ground Power OK +5V S1
2
Vo
lts
-5 V
olt
s
+5
Vo
lts
+3
Vo
lts
-1
2
Vo
lts
Ground Ground Ground PSON# Ground
+5
Vo
lts
+1
2
Vo
lts
+3
Vo
lts
+5
Vo
lts
Ground
ATXPWR1 ATX12V1
+1
2V
D
C
G
ND
+1
2V
D
C
G
ND
9. Backplane SMBus connector (6-1 pin BPSMB1)
This connector allows you to connect System Management Bus devices
(SMBus). Devices communicate with an SMBus host or other SMBus devices
using the SMBus interface.
®
P5BV-C/4L
P5BV-C/4L SMBus Connector
BPSMB1
1
I2C_CLK
#
GN
D
12CDAT P2
+5
V
FAN_PWM FA
N_PW
M