Some newer CPUs have security features (like VT-d) that can interfere with direct I/O port manipulation. Modern Alternatives to PortTalk
You must run any application utilizing PortTalk as an Administrator. porttalk.sys windows 10 download
The most popular modern choice. It supports 64-bit Windows and comes with a digital signature that makes installation much easier. UserPort: Similar to PortTalk, though also quite old. Some newer CPUs have security features (like VT-d)
How to verify if your is active in Device Manager? porttalk.sys windows 10 download
Because PortTalk is an open-source utility, it is hosted on various driver archives and developer repositories.
This guide covers everything you need to know about finding, installing, and troubleshooting PortTalk on modern operating systems. What is PortTalk.sys?