Connecting Cables; Atx Pwr, Dc Pwr And Hdd Pwr Connectors (Jpw1, J1, J3) - Supero A1SAi-2550F User Manual

2-6

Connecting Cables

This section provides brief descriptions and pin-out definitions for onboard headers
and connectors. Be sure to use the correct cable for each header or connector.
For information on back panel USB and Front Panel USB ports, refer to age 2-12.
ATX PWR, DC PWR and HDD PWR
Connectors (JPW1, J1, J3)
The 24-pin ATX power connector header
(JPW1) is used to provide power to the
motherboard. The 4-pin DC Power con-
nector, located at J1, provides alternative
12V power source for space-restrained
enclosures such as SC101i when JPW1
is not in use. The 4-pin HDD Power
connector J3 provides power to onboard
HDD devices.
Note 1: Do not use the 4-pin
DC power at J1 when the
24-pin ATX Power at JPW1 is
connected to the power supply.
1
3
4 2
JUIDB1
VGA
BMC
LAN2/LAN4
JI2C1
A1SAi/A1SRi Series Motherboard
Rev. 1.00
JI2C2
Battery
JWD1
JF1
1
J3
C
SP1
12V DC Power
Pin Definitions (J1)
Pin# Definition
1-2 GND
3-4 12V
USB2.0-0/1
COM1
USB3.0-0/1
IPMI_LAN
LAN1/LAN3
Marvell
PHY
BIOS
JBT1
CPU
FAN3
FAN1
ATX Power 24-pin Connector
Pin Definitions (JPW1)
Pin# Definition
13 +3.3V
14 NC
15 COM
16 PS_ON
17 COM
18 COM
19 COM
20 Res (NC)
21 +5V
22 +5V
23 +5V
24 COM
B
A
2-19
Chapter 2: Installation
Pin # Definition
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
4-Pin HDD Power
1
Pin Definitions (J3)
Pin# Definition
1 12V
4
2-3 GND
4 5V
A. 24-Pin ATX PWR
B. 4-Pin 12V DC Alternative
Power Source (up to 144W)
C. 4-Pin HDD PWR