M
M
X
X
3
3
S
S
-
-
T
T
/
/
M
M
X
X
3
3
S
S
P
P
-
-
T
T
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
S
S
u
u
p
p
p
p
o
o
r
r
t
t
2
2
n
n
d
d
U
U
S
S
B
B
P
P
o
o
r
r
t
t
This motherboard provides four
connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There
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.
USB2 Connector
+5V
SBD2-
SBD2+
GND
NC
+5V
SBD3-
SBD3+
GND
KEY
1 2
38
