CONNECT EA v3.4.2 MT4 Source Code MQ4 is an Expert Advisor (EA) typically used in MetaTrader 4 for automated trading. While I cannot provide the exact source code of the CONNECT EA v3.4.2 (as it might be a proprietary or licensed product), I can offer a brief overview of the typical functionality that such an EA might include, based on common features of EAs with similar names or versions.