SCANTECH ID (Champtek company) LIBRA L-7050 - Manual (Page 18)

12
Installation
2.4 POWERING
LIBRA is designed to use a single cable for both data transmission and
power supply. This requires that your host system can provide sufficient
power on its data port (RS232, KBW, or USB).
Power injector
Some applicable LIBRA interface cables have a power injector to connect
an external power supply in case the host system cannot supply sufficient
power for the scanner.
Power injector
+5 V AC adapter
Cable Power injector
RS232, Keyboard Wedge
√
Powered USB, USB

NOTE

Though some cables have a power injector, this does not
mean that you must use a power supply.

For safety reasons, an automatic switch will disconnect the
power provided by the host system, as soon as a separate
power adapter is connected to the power injector.
Changeable power plugs
To change the power plug suited to your area, follow the steps below:
1. Press and hold the tab on the AC power adapter.
2. Remove the changeable plug outwards.
3. Replace with the desired power plug.