DPCI Manager

However before you download a driver you need to know which exactly devices you have installed in your system.

Switching between your installation of OSX and Windows or Linux just to find PCI device ID and the name is at least annoying. It will try to identify all PCI devices in the system and show their resources. Hope it can be useful. The DPCIManager is a tool to identify PCI devices on Mac OSX. It is very useful for installation of OSX on PC computers to find valid drivers.