As a starting point let's consider the 3-Port 5-V USB to TTL Converter - CH340G UART Serial Adapter Module, which is also known as the CH340G UART Serial Adapter Module STC.
This device supports a wide range of Windows operating systems and allows for communication via USB1.1 or USB2.0/USB3.0. Additionally, it features a simulation interface and supports common MODE contact signal, making it a versatile tool for upgrading serial peripherals.

One of the most unique things about this converter is its support for IRDA SIR infrared communication. This feature allows for the wireless transfer of data between devices which can be particularly useful in settings where cables are not convenient or feasible. In practice, the converter works well and has received positive feedback from users who appreciate its compatibility with various Windows systems. However, some reviewers have noted that the connector pin header is not always aligned before it is soldered, which can make connecting and disconnecting devices slightly more difficult.

To sum it up the 3-Port 5-V USB to TTL Converter - CH340G UART Serial Adapter Module has many benefits. It is a versatile tool that supports a wide range of Windows systems and allows for wireless communication via IRDA SIR. Additionally, it features a simulation interface and supports common MODE contact signal, making it a valuable resource for upgrading serial peripherals. While some reviewers have mentioned the issue with the connector pin header, the pros outweigh the cons with this converter.

In my opinion this is a top-quality product that delivers on its promises. It has received positive feedback from users and offers a range of features that make it a valuable tool for upgrading serial peripherals. If you're in need of a reliable converter that supports multiple Windows systems and allows for wireless communication, the 3-Port 5-V USB to TTL Converter - CH340G UART Serial Adapter Module is an excellent choice.