Expect to find folders for specific hardware (Video, LAN, SCSI). You will likely need to point the "Add Hardware" wizard to the specific .inf files within these folders.
Recent developments have brought third-party NVMe support to NT 4.0, allowing this 1996 OS to boot from modern PCIe SSDs. Driver Collection Usage
“NT 4.0, with the right hardware, is completely rock solid. While it not supporting PnP can be a pain, it's also its biggest benefit.” VOGONS · 1 year ago
Native USB support is non-existent, though third-party drivers like IONetworks NT4-USB can add functionality for mice and flash drives.
The user experience with NT 4.0 drivers is often described as a trade-off between rock-solid performance and archaic management hurdles.
Are you attempting to install these drivers on or a virtual machine like VMware or VirtualBox?
Unlike Windows 95, NT 4.0 does not natively support "Plug and Play" or have a modern Device Manager . Hardware must often be added manually through specific Control Panel applets, and driver installation frequently requires a reboot.
Support is very limited, which hinders 3D gaming compared to the consumer-focused Windows 9x series.