HP Vectra XW Optimization Manual page 28

Your System's
Accessory Board Slots
Which Peripherals Can
Benefit From The PCI
Bus?
PCI Plug and Play
Low Power Migration
1 Your Personal Workstation's Performance Features
Installing Fast Peripherals on the PCI Bus
Three of your system's accessory board slots are for full-length, 32-bit
PCI accessory boards. Two of these are occupied by the 3D-graphics
adapter and LAN Interface. Two more slots are for full-length, 16-bit ISA
accessory boards. The sixth slot is a combination slot and can be used
for either a full-length, 16-bit ISA accessory board or a full-length, 32-
bit PCI accessory board.
Any peripheral that needs to exchange large quantities of data with
your system's processor or memory will benefit from the bandwidth
(data handling capability) of the PCI bus. For this reason your Personal
Workstation's integrated SCSI controller, integrated IDE controller,
graphics adapter and networking board are all installed on the PCI bus.
If you need to install an accessory board in your Personal Workstation,
HP recommends that the PCI bus is your first choice for expansion.
The PCI standard supports Plug and Play, which means easy
configuration for installed peripherals. If you install an extra PCI
accessory board, the board will be configured for use automatically.
The PCI bus in your HP Vectra XW supports PCI accessory boards that
use two different power sources, 3.3 volts or 5 volts. Most currently
available PCI accessory boards use the 5 volt power source. Accessory
boards that use the 3.3 volt power source use less power, which helps
to reduce the overall power consumption of your system. As more 3.3
volt PCI accessory boards become available, you will be able to install
these inside your Personal Workstation immediately.
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