The AS PC3 cable is used for updating HB units that do not have a card reader...
To power your HB unit on 110v you will need a AC/DC converter with an output 1amp minimum...
HB does not sell this...due to the increased federal regulations on this type of device ...making it not cost effective to offer...
You can find AC/DC converters at Radio Shack (or maybe a leftover from another device) stuck in a drawer at home...
You will also need an extra HB PC 11 power cord...
http://www.humminbird.com/Products/PC-11/Be sure to install a 3amp fuse in the positive wire...
Rickie