For some reason Icom have changed the accessory socket design on some models.
 i12B plugs are suitable for both the squared and rounded profile.

Takeoff Profiles
Please Choose a Plug & Click on the Image

Icom (Multi)
F50/F51 F60/F61
F4062 IC-F3162 / 4162

Icom (right angle 2-pin)
With retaining screws
Squared and Rounded Profile

I6 i12B.jpg
Product Code i6

Product Code i12B
With rubber seal.