Option Installation 3-7
Expansion Slot Locations
The desktop system has four expansion slots (see Figure 3-5) and the minitower system has
five useable expansion slots (see Figure 3-6):
two ISA slots in the desktop system, three ISA slots in the minitower system
one PCI slot in the desktop system, one PCI slot in the minitower system
one shared PCI/ISA slot in each system.
ISA expansion slots support industry-standard 8-bit or 16-bit expansion boards. The
PCI/ISA slot also supports PCI expansion boards.
PCI expansion boards run at the system’s processor speed. The PCI bus handles 32 bits of
data at a time, being wider as well as faster than the standard ISA bus. PCI boards can send
and receive data much faster which boosts system performance.
Figure 3-5 Locating Desktop Expansion Slots
ISA Slot*
PCI Slot
PCI/ISA Slot
* In some models, an
ISA slot is occupied by
a fax/modem or network
interface board
ISA Slot*
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