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19
Chapter 2 Hardware Installation
Chapter 2
Backlight Power Select
USB Power Select
2-3 On: +5V
2-3 On: 5V
3
1
1
3
2
2
1-2 On: +3.3V
(default)
1-2 On:
5VDU (default)
3
1
1
3
JP3
JP31
JP32
JP36
JP34
JP3 is used to select the power level of backlight brightness control: +3.3V (default) or +5V.
The power of the USB connectors’ voltage buses can be configured to either 5VDU or 5V. The
jumpers, i.e. JP31, JP32, JP33, JP34, and JP36 are located as illustrated above and correspond
to each USB port number as listed below.
Important:
Before powering-on the system, make sure that the power settings of JP3 match the
power specification of backlight control. Selecting the incorrect voltage will seriously
damage the backlight.
2
2
JP33
JP number
USB Port
JP31
USB 1/2 (USB 3.0)
JP32
USB 3/4 (USB 3.0)
JP33
USB 5/6 (USB 2.0)
JP34
USB 7/8/9/10 (USB 2.0)
JP36
USB 5/6 (USB 3.0)