Specifications

CHAPTER 4
Expansion Features
62 The PCI Bus Communications Slot
Universal Serial Modem Card 4
The PCI bus communications slot (comm slot II) in the Macintosh Performa 6400
computer is not compatible with cards designed only for the PDS communications slot
(comm slot I) in the Power Macintosh 5200 and 6200 computers. As shown in Figure 4-6,
such cards do not physically fit into the communications slot of the Macintosh Performa
6400 computer, because the communications slot is keyed at the opposite end.
Figure 4-6 Communications slot card compatibility
97 Reserved 98 RST~
99 GND 100 Reserved‘
101 CLK 102 Reserved
103 GND 104 Reserved
105 Reserved 106 Reserved
107 Reserved 108 Reserved
109 CommGnd 110 RefGnd
111 AudToSlot 112 AudFromSlot
Table 4-12 Pin assignments for the PCI bus communications slot connector (continued)
Odd-numbered pins Function Even-numbered pins Function
Vertical plate
Compatible
Compatible
Notches
Logic board
(side view)
Communication slot
Communication card
Notches
N
ot compatible
Notches