6
KEYBOARD WEDGE INSTALLATION (CONTINUED)Manufacturer’s Recommendation
If the keyboard port of the host system cannot supply enough current, the use of
an external power supply with the MS5145 Keyboard Wedge will be necessary.
Powering the MS5145 directly from the computer keyboard connector could
interfere with the operation of the scanner or the computer. Not all computers
supply the same current through the keyboard port, so a scanner may work on
one computer and not another (see caution statement on page 5).
Caution:
To maintain compliance with applicable standards, all circuits connected to the scanner must meet
the requirements for SELV (Safety Extra Low Voltage) according to EN 60950.
*To maintain compliance with standard CSA C22.2 No. 60950/UL 60950 and norm EN 60950, the
power source should meet applicable performance requirements for a limited power source.
**To maintain compliance with federal regulations 21 CFR, Part 1040.10, section (f)(6) the scanner
must be plugged into an electrical outlet with a switch accessible to the user or be powered by a host
system containing a switch that will disable power to the scanner
Note: The center of the L-Shaped plug of the power supply is negative (“-“).