the system was first announced publicly at the 1992 worldwide developers conference, positioned primarily as a secondary bus for computer systems to carry multiple streams of digital video without using the existing backplane bus. apple was particularly interested in this role due to the limitations of their current nubus systems in terms of speed. they envisioned various video cards using a second connector located near the top of the card, opposite the nubus connector on the bottom, to talk to each other. optionally, one of the cards would produce compressed output, which could be sent over the nubus for storage or display. before any commercial use of quickring, newer versions of pci started appearing that offered performance close enough to quickring to make its role redundant. apple switched to an all-pci based computer lineup starting in 1995, and in one of their general downsizings in the early 90s, apple dropped their funding for quickring.