PIX 535 Front Panel
The PCI slots are divided into different bus speeds. The slots are numbered from right to left,
and slots 0 through 3 run at 64-bit/66 MHz and can support Gigabit Ethernet interface cards
(1GE-66). Slots 4 through 8 run at 32-bit/33 MHz and can support Fast Ethernet interface
cards (PIX-1FE and PIX-4FE). Figure 3-13 depicts the rear panel of the PIX 535 Firewall.