F
F
o
o
r
r
t
t
r
r
e
e
s
s
s
s
7
7
7
7
0
0
0
0
/
/
7
7
9
9
0
0
0
0
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
2.6.13 Support 4 USB Connectors
This motherboard provides four
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
NC
GND
SBD3+
SBD3-
+5V
KEY
GND
SBD2+
SBD2-
+5V
1
71
Open
A
