The notches that guide installation in the molex connector are called

The notches that guide installation in the Molex connector are called chamfers.

A chamfer connects two objects with an angled line. Two-piece pin and socket interconnection forms a Molex connector.  This is widely used in the computer industry. Molex connector is the most common type of connector which is used for devices that require 5 V or 12 V of power.

the atm that sounds like it should be the answer

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.