(The Power User Choice)
You can use the System.IO.Ports namespace in PowerShell to interact with COM ports. windows 10 hyperterminal
Mention the word "HyperTerminal" to a veteran system administrator or a hobbyist who cut their teeth on dial-up BBSes in the late 90s, and watch their eyes glaze over with a mix of fondness and mild trauma. For everyone else—especially Windows 10 users—the reaction is usually a confused blink: "What’s a HyperTerminal?" (The Power User Choice) You can use the System
Modern versions of HyperTerminal offered by Hilgraeve include features that go beyond the basic serial port needs of the early 2000s: But neither of these solves the core problem:
Microsoft’s official replacement was (for network devices) and Remote Desktop (for other Windows PCs). But neither of these solves the core problem: What if you need to talk to a real, physical serial port?
If you miss the "look and feel" of HyperTerminal, Tera Term is the closest spiritual successor.
So here you are, in 2026, with a shiny Windows 10 laptop. You have a brand new microcontroller, an old-school industrial printer, or a network switch that refuses to boot. You need to send an AT command or view a boot log.