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This motherboard provides 4
are two connectors on the PC99 back panel. You can use proper cable to connect others USB connectors to the back plane or
front panel of chassis.
Pin 1
NC
GND
SBD3+
SBD3-
+5V
1
B
P
o
r
t
B
P
o
r
t
USB
connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There
KEY
GND
SBD2+
SBD2-
+5V
42
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