M
M
X
X
4
4
6
6
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
3
3
U
U
S
S
B
B
P
P
o
o
r
r
t
t
s
s
This motherboard provides six
USB
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 other USB connectors to the back panel or front panel of chassis.
Pin 1
Pin 1
U
U
S
S
B
B
3
3
C
C
o
o
n
n
n
n
e
e
c
c
t
t
o
o
r
r
U
U
S
S
B
B
2
2
C
C
o
o
n
n
n
n
e
e
c
c
t
t
o
o
r
r
KEY
GND
USB_ FP_P0+
USB_FP_P0-
USBPWR0
USB_FP_OC0
GND
US
USB_FP_P1-
USBPWR0
1
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