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3. Layout, Connections & Jumpers
3.2 Connections
USB 2.0 B-Port:
3.3 Jumper Settings
The two internal jumpers Bus Power (JP1) and Host Control (JP2) can be used to configure the
power output on the downstream ports as required.
ENA DIS
JP1
JP2
HOST
ON
The possible settings and their effects are shown in the following table.
Settings
Jumper JP1
Jumper JP2
Bus Power
Host control
ENA
ON
(ble)
(Power on)
DIS
ON
(able)
(Power on)
ENA
HOST
(ble)
(control)
DIS
HOST
(able)
(control)
DIS/ENA
HOST/ON
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USB 2.0 B-Port
Pin
Signal
1
VCC
2
DATA-
Status
Netzteil
Host PC
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
on
off
off
12
Pin
Signal
3
DATA+
4
GND
Function
Hub Downstream
Data
Power
no
on
yes
on
no
on
no
off
no
off
yes
on
no
off
no
off
yes
on
no
off
EX-1594HMS
Default:
JP1 = ENA
JP2 = ON
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