This waterproof power cable from Humminbird with a total length of 1.84m (6ft) is suitable for all Huminbird devices, except the ONIX series (which can be powered by the Humminbird PC 12 power cable).
The advantage of the PC 11 over the PC 10 is the built-in noise filter, whereby the emitted electromagnetic waves from the terminal, e.g. a sounder, are canceled and so other devices that transmit on the same frequency, can't be disturbed.