Thunderbolt Port: Thunderbolt port is a connectivity medium, which uses growth bus to let the laptop computer be linked to the peripheral units. Revisions got here in 1993 to model 2.0, and in 1995 to PCI 2.1, as an expansion to the ISA bus. https://pr1bookmarks.com/story20042169/how-to-make-use-of-r-slot-to-desire