The SMART MACHINE EA MT4 V3.4.9 appears to be a version of an Expert Advisor (EA) for MetaTrader 4 that automates trading based on a set of predefined rules and algorithms. Although the specific details of SMART MACHINE EA may vary, I can provide an overview of how EAs like this typically work and what you might expect from the system.

The Smart Machine EA V3.4.9 is an Expert Advisor (EA) designed for MetaTrader 4 (MT4) that automates trading strategies. However, the MQ4 file is the source code file for the EA, which is used for coding the EA in MetaTrader’s MQL4 language. MQ4 files allow you to make adjustments to the code and customize the EA if you have the necessary programming knowledge.

The Gold Trade Pro Expert Advisor (EA) you're referring to seems to be a proprietary or commercial EA that is specifically designed to trade gold (XAU/USD). Unfortunately, as with most commercial EAs, the MQ4 source code is typically not publicly available unless the developer provides access to it. Developers generally distribute the EX4 compiled file, which is executable in MetaTrader 4 (MT4), but not the underlying MQ4 source code, to protect their intellectual property and prevent unauthorized modifications or replication.

The Gold Trade Pro EA V3.3 MT4 is an automated trading system designed specifically for trading gold (XAU/USD) on the MetaTrader 4 (MT4) platform. It likely uses predefined strategies to automate trading and manage trades without the need for manual intervention. The SetFiles are configuration files that come with the EA and store optimized settings for various market conditions, timeframes, and strategies.

The Gold Reaper EA V1.5 MT4 is an Expert Advisor designed for MetaTrader 4 (MT4) to automate trading for gold (XAU/USD), one of the most popular and volatile assets in the forex market. This EA likely uses algorithmic trading strategies to make decisions on when to buy and sell gold, potentially aiming to capitalize on price swings and market trends. The SetFiles that accompany the EA are pre-configured settings designed to optimize the EA's performance under different market conditions, allowing traders to apply them with just a few clicks. These files are essential because they save traders from manually adjusting every parameter in the EA, offering a quick way to start trading with the EA under different conditions or strategies.