Review on 🔌 StarTech.com 1 Port USB to Serial RS232 Adapter - Prolific PL-2303 - DB9 Serial Converter - USB to RS232 Cable - Gray, 430 mm by Carlos Long

supports TTL Connection. Being able to control if RX and TX are working is very useful. If you always need a null modem for your projects because that's how the plug is connected, save yourself the hassle of an additional adapter. Especially good if, like me, you often travel with a cable. However, if your board/device doesn't have a crossover, you should look for a cable without a built-in null modem so you don't need a null modem adapter to "cross back" to get a direct connection What's important is that it uses a reliable FTDI chip. The FT232R, which in my experience is the most reliable in terms of the chip itself, and drivers for modern versions of Windows (Vista+) compared to regular versions of Prolific and ATEN chipsets are used in most other similar chipsets cables.