Portmon //top\\ -

Occasionally, the name "portmon" appears in modern open-source projects as a shorthand for . In this context, it usually refers to a lightweight script or service (written in Python or Go) designed to:

is a legacy but powerful utility for Windows that monitors and displays all serial and parallel port activity on a system. It is widely recognized as part of the Sysinternals suite, a collection of advanced system utilities created by Mark Russinovich and Bryce Cogswell (now owned by Microsoft).

In modern environments, administrators and developers often use alternative tools for hardware debugging: portmon

Use Edit > Filter/Highlight to exclude "noise" like repeated status checks ( IOCTL_SERIAL_GET_COMMSTATUS ) so you only see the actual data sent and received.

Portmon is used to observe how software interacts with hardware ports. It is essentially a "sniffer" for I/O requests. Common scenarios include: Common scenarios include: : Can monitor port activity

: Can monitor port activity on a remote computer across a network.

The Effects of Inter-Set Recovery Time on Explosive Power, ... - MDPI In modern environments

Go to Computer > Connect Local to monitor your own machine.

Go to Capture > Ports and check the COM or LPT ports you want to watch.