
Instruction Manual
3
Conguring the Jumpers
Internal Power External Power
5V
J3 J1
5VA
5VP
RI
5V
12V
12VA
12VP
J2
J3 J1
5VA
5VP
RI
5V
12V
12VA
12VP
J2
12V
J3 J1
5VA
5VP
RI
5V
12V
12VA
12VP
J2
J3 J1
5VA
5VP
RI
5V
12V
12VA
12VP
J2
The card uses jumpers to set
internal and external power
voltages, and to congure which
serial ports will receive 5v, 12v, or
RI signal (unpowered) through the
9th pin.
J1: Sets voltage output type to
devices on the DB9 port
J2, J3: Sets internal (bus) and
external (SP4 connector) voltage
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