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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
Bus Power
ENA
(ble)
DIS
(able)
ENA
(ble)
DIS
(able)
DIS/ENA
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USB 2.0 B-Port
Pin
1
2
Jumper JP2
Power
Host control
on
ON
(Power on)
off
on
ON
(Power on)
off
on
HOST
(control)
off
on
HOST
(control)
off
on
HOST/ON
off
Signal
Pin
VCC
3
DATA-
4
Status
Host PC
Data
off
on
off
on
off
on
off
on
on
off
12
EX-1594HMS-PL
Signal
DATA+
GND
Function
Hub Downstream
Power
no
on
yes
on
no
on
no
off
no
off
yes
on
no
off
no
off
yes
on
no
off
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