HP Armada 7300 Installation And Operation Manual page 127

Solving External Pointing Device Problems
Problem
External pointing
device connected to
USB connector
does not work
(continued) .
External pointing
device connected to
USB connector
does not
work during
startup (before
Windows 95 loads).
12-12 Troubleshooting
Possible Cause
Computer is USB-
equipped, but the
operating system
limits external devices
connected by USB to
two tiers. These tiers
can include no more
than two hubs on the
first tier and no more
than one keyboard
and one pointing
device on the first or
second tier.
During startup, only
two tiers are
supported by the USB
connectors. These
tiers can include no
more than two hubs
on the first tier and no
more than one
keyboard and one
pointing device on the
first or second tier.
Continued
Solution(s)
Reduce the number of
connected external USB
devices to no more than
two hubs on the first tier,
and no more than one
keyboard and one pointing
device on the first or
second tier.
Connect a PS/2-
compatible pointing device
to one of the two
keyboard/mouse
connectors; connect a
serial pointing device to
the serial connector.
Use the pointing device
only after Windows 95
has loaded.
Reduce the number of
connected external USB
devices to no more than
two hubs on the first tier,
and no more than one
keyboard and one pointing
device on the first or
second tier.