Table of Contents
Advertisement
A1SAi & A1SRi Series Motherboard User's Manual
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
JUIDB1
VGA
BMC
LAN2/LAN4
Marvell
PHY
JI2C1
A1SAi/A1SRi Series Motherboard
Rev. 1.00
JI2C2
Battery
JWD1
JF1
1
J3
SP1
Pin#
Signal
1
VBus
2
IntA_P1__SSRX-
3
IntA_P1__SSRX+
4
Ground
5
IntA_P1__SSTX-
6
IntA_P1__SSTX+
7
Ground
8
IntA_P1__D-
9
IntA_P1__D+
10
Ground
11-19
NC (Not Connected)
USB2.0-0/1
COM1
USB3.0-0/1
IPMI_LAN
LAN1/LAN3
BIOS
JBT1
CPU
FAN3
FAN1
Internal USB-3.0 2
Pin Definitions
Description
Power
USB3 ICC Port1 SuperSpeed Rx-
USB3 ICC Port1 SuperSpeed Rx+
Ground
USB3 ICC Port1 SuperSpeed Tx-
USB3 ICC Port1 SuperSpeed Tx+
Ground
USB3 ICC Port1 D- (USB2 Signal D-)
USB3 ICC Port1 D- (USB2 Signal D2+)
Ground
NC (Not Connected)
A. Backpanel USB 2.0 #0
B. Backpanel USB 2.0 #1
C. Backpanel USB 3.0 #0
F
D. Backpanel USB 3.0 #1
E. USB 3.0 #2 (Internal Header - One
Port Available)
E
F. USB 3.0 #3 (Type A)
2-12
D
C
B
A
Advertisement
Table of Contents
