MSI Z97 GAMING 9 AC Manual - Manual (Page 38)

Chapter 1
1-24 Getting Started
JUSB3~4: USB 3.0 Expansion Connectors
The USB 3.0 port is backwards compatible with USB 2.0 devices. It supports data
transfer rates up to 5Gbits/s (SuperSpeed).
5.US
B3_T
X_C
_DN
4.Gro
und
3.US
B3_R
X_D
P
2.US
B3_R
X_D
N
1.Po
wer
10.G
roun
d
9.
+
USB
2.0
8.
-
USB
2.0
7.Gro
und
6.US
B3_T
X_C
_DP
20.N
o Pin
19.P
ower
18.U
SB3_
RX_D
N
17.U
SB3_
RX_D
P
16.G
roun
d
15.U
SB3_
TX_C
_DN
14.U
SB3_
TX_C
_DP
13.G
roun
d
12.U
SB2.0
-
11.
+
USB
2.0
Important
Note that the VCC and GND pins must be connected correctly to avoid possible
damage.
To use a USB 3.0 device, you must connect the device to a USB 3.0 port through
an optional USB 3.0 compliant cable.
JCI1: Chassis Intrusion Connector
This connector connects to the chassis intrusion switch cable. If the computer case is
opened, the chassis intrusion mechanism will be activated. The system will record this
intrusion and a warning message will flash on screen. To clear the warning, you must
enter the BIOS utility and clear the record.
2.CIN
TRU
1.Gro
und
•
•