IO Ports

https://wiki.osdev.org/I/O_Ports https://bochs.sourceforge.io/techspec/PORTS.LST

I/O Ports (not the same as Networking) refers to the specific access approach for communicating with Devices. In x86, these refer to specific addresses on the x86 I/O Bus

In general, it is not recommended to directly communicate over IO ports, but to instead use a standard like PCI