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M
X
3
S
-
U
/
M
X
3
S
M
X
3
S
-
U
/
M
X
3
S
nd
nd
S
u
p
p
o
r
t
2
U
S
B
S
u
p
p
o
r
t
2
U
S
This motherboard provides four
are two connectors on the PC99 back panel. You can use proper cable to connect the other USB connector to the back panel or
front panel of chassis.
SBD2-
SBD2+
P
-
U
P
-
U
P
o
r
t
B
P
o
r
t
USB
connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There
USB2 Connector
1
2
+5V
+5V
SBD3-
SBD3+
GND
GND
NC
KEY
41
O
n
l
i
n
e
M
a
n
u
a
l
O
n
l
i
n
e
M
a
n
u
a
l
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