2-12
A1SAi & A1SRi Series Motherboard User’s Manual
A. Backpanel USB 2.0 #0
B. Backpanel USB 2.0 #1
C. Backpanel USB 3.0 #0
D. Backpanel USB 3.0 #1
E. USB 3.0 #2 (Internal Header - One
Port Available)
F. USB 3.0 #3 (Type A)
Universal Serial Bus (USB)
Two Universal Serial Bus 2.0 ports (0/1) and two USB 3.0 ports (0/1) are located
on the I/O back panel. The motherboard also has two onboard USB3.0 connections
(USB2/3) to provide additional USB support. USB 3.0 port 2 is from an internal
header, while USB 3.0 port 3 is a Type A connector. (USB cables are not included
in the shipment.) See the tables below for pin definitions.
Back Panel USB-2.0 #0/1
Pin Definitions
Pin# Definition Pin# Definition
1
+5V
5
+5V
2
USB_PN1
6
USB_PN0
3
USB_PP1
7
USB_PP0
4
Ground
8
Ground
Internal USB-3.0 2
Pin Definitions
Pin#
Signal Description
1
VBus
Power
2
IntA_P1__SSRX-
USB3 ICC Port1 SuperSpeed Rx-
3
IntA_P
USB3 ICC Port1 SuperSpeed Rx+
4
Ground
Ground
5
IntA_P1__SSTX-
USB3 ICC Port1 SuperSpeed Tx-
6
IntA_P
USB3 ICC Port1 SuperSpeed Tx+
7
Ground
Ground
8
IntA_P1__D-
USB3 ICC Port1 D- (USB2 Signal D-)
9
Int
USB3 ICC Port1 D- (USB2 Signal D2+)
10
Ground
Ground
11-19
NC (Not Connected)
NC (Not Connected)
Battery
JD1
FAN1
FAN2
FAN3
I-SA
TA4
I-SA
TA5
J1
J3
JPI2C1
JPW1
JSD1
JTPM1
VGA
LED8
LED3
LED7
JBT1
1
JOH1
JL1
JI2C1
JI2C2
JPK1
JWD1
JPG1
JIPMB1
COM2
COM1
JF1
USB 3.0-2
LAN3/4 LED
LAN2/LAN4
LAN1/LAN3
USB2.0-0/1
USB3.0-0/1
USB 3.0-3
IPMI_LAN
PCI-E 2.0 X8
DIMMA1
DIMMA2
DIMMB2
DIMMB1
I-SA
TA0
A1SAi/A1SRi Series Motherboard
Rev. 1.00
FP
CTRL
JPL1
BIOS
Marvell
PHY
BMC
Bar Code
JUIDB1
CPU
SP1
I-SA
TA2
I-SA
TA3
I-SA
TA1
LED2
D
C
A
B
E
F
