Supermicro 5038K-i User Manual page 55

Power Connectors
A 24-pin main power supply connector
(J24) and two 8-pin CPU power
connectors (JPWR1/JPWR2) on the
motherboard. These power connectors
meet the SSI EPS 12V specifi cation
and must be connected to your power
supply to provide adequate power to
the system. See the tables on the right
for pin defi nitions.
Warning! To avoid damaging the power
supply or the motherboard, be sure to
use a power supply that contains a 24-
pin and two 8-pin power connectors.
Be sure to connect the 24-pin power
connector at J24, and the two 8-pin power
connectors (JPWR1/JPWR2) to your
power supply. Failure to do so may void
the manufacturer warranty on your power
supply and motherboard.
Fan Headers
This motherboard has seven system/
CPU fan headers (Fans 1-5, Fans A,
B) on the motherboard. All these 4-pin
fans headers are backward-compatible
with the traditional 3-pin fans. However,
fan speed control is available for 4-pin
fans only by Thermal Management via
the IPMI 2.0 interface. See the table on
the right for pin defi nitions.
Chassis Intrusion
A Chassis Intrusion header is located
at JL1 on the motherboard. Attach an
appropriate cable from the chassis to
inform you of a chassis intrusion when
the chassis is opened.
Chapter 5: Advanced Motherboard Setup
ATX Power 24-pin Connector
Pin Defi nitions (J24)
Pin# Defi nition
13 +3.3V
14 -12V (NC)
15 COM
16 PS_ON
17 COM
18 COM
19 COM
20 Res (NC)
21 +5V
22 +5V
23 +5V
24 COM
12V 8-Pin Power Connector
Pin Defi nitions (JPWR1/2)
Pins
1 through 4
5 through 8
Fan Header
Pin Defi nitions
Pin#
1
2
3
4
Chassis Intrusion
Pin Defi nitions (JL1)
Pin#
1
2
5-11
Pin # Defi nition
1 +3.3V
2 +3.3V
3 COM
4 +5V
5 COM
6 +5V
7 COM
8 PWR_OK
9 5VSB
10 +12V
11 +12V
12 +3.3V
Defi nition
Ground
+12V
Defi nition
Ground
+12V
Tachometer
PWR Modulation
Defi nition
Intrusion Input
Ground