Apple Final Cut Pro 6 - Manual (Page 178)

Chapter 12 Connecting Professional Video and Audio Equipment 177
III
PCI Video Interface Card with Breakout Box
Many PCI cards aren’t big enough to fit all of the necessary video and audio
connectors. In these situations, a breakout box is connected to the PCI card via a
multipin connector on a long cable, and the connectors are accessible on the breakout
box instead of the back of the PCI card. A breakout box is also useful because it allows
you to place the connectors somewhere more convenient than the back of your
computer, such as an equipment rack or a desktop.
USB Video Interface
USB video interfaces cannot support the high data rates required for professional video
use, so they are not commonly used. USB video interfaces are usually used for
converting analog video sources to a digital signal for capture.
Analog or digital VTR Computer
(with PCI card)
Breakout box
BNC connector
USB interface
USB RCA connector
Analog VTR Computer