Cheap USB/RS-232/UART cables or breakout dongles are really cheap these days, so are USB hubs if you need multiple serial ports. But without isolation. Report comment ...

The serial port is most commonly RS232, which is a standard that dates back to the 1960s. Although RS232 is the most widely used, these adapters can also feature RS485 or RS422 serial interfaces.

True, most of them end in a USB port, these days, but there’s still a lot of gear with a DE-9 (it isn’t a DB-9, despite the common use of the word) or a TTL-serial port lurking around.

I f you've been using computers for more than a couple of decades, you've probably used a serial port to attach peripherals like your mouse and modem. Until the USB standard rendered them obsolete ...

I have a bunch of serial devices that I need to communicate with. Some of them are connected to native serial ports, and some have USB->RS232 adapters. I am communicating to them via the serial ...

If you’ve never heard of those things, and if you have, thank USB. When it was first released in 1996, the idea was right there in the first phrase: Universal Serial Bus. And to be universal, it ...

This, and the rest of the board's specs, are pretty normal—but then there's the 20 USB 3.2 type-A ports. Yes, that's right, 20 USB ports, and box headers for an additional four straight serial ...

The serial port is most commonly RS232, which is a standard that dates back to the 1960s. Although RS232 is the most widely used, these adapters can also feature RS485 or RS422 serial interfaces.

Before USB ports became standard on PCs, several devices connected through a serial port. They're obsolete in many ways, but they still see some use.