Apple Macintosh Performa 6400 Series - Manual (Page 127)

Expansion cards are printed circuit boards that can be installed in your
computer to give it special features, such as enhanced video capabilities,
networking and communications capabilities, and additional processing
power. Your Macintosh has slots available for three different kinds of
expansion cards:
m two PCI (peripheral component interconnect) slots for 6.88-inch PCI cards
(such as a video-editing card)
m a communication slot for an internal modem or Ethernet card (you may
already have an internal modem installed in this slot)
m a video-in slot for a video input card that brings signals into the computer
from a videocassette recorder (VCR), laser disc player, video camera, or
similar device
127
Installing Expansion Cards
Read this chapter for instructions
on installing expansion cards in
your computer .
9