LSPCI Binary & DirectHW.kext compatible with Mac OS X Leopard, Mac OS X Snow Leopard, Mac OS X Lion, OS X Mountain Lion, OS X Mavericks, OS X Yosemite & macOS Sierra
lspci is a command on Unix-like operating systems that prints ("lists") detailed information about all PCI buses and devices in the system. It is based on a common portable library libpci which offers access to the PCI configuration space on a variety of operating systems.
more info @ Wiki
Notes: After install