Compaq ARMADA 3500 3500 User Manual page 156

External device The operating system
connected to a USB limits external devices
connector does not connected by USB to
work two tiers which 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.
External device During startup, only
connected to USB two tiers are
connector does not supported by the USB
work during startup connector. These
(before Windows 95 tiers can include no
loads) more than two hubs
on the first tier and no
more than one
keyboard and one
pointing device on the
first or second tier.
External devices in An unpowered hub is
lower tiers do not connected to another
work unpowered hub.
IMPORTANT: External USB keyboards will not function until the
operating system has been booted.
Writer: Lorise Fazio Saved by: J Abercrombie Saved date: 12/08/98 4:55 PM
Part Number: 310296-002 File name: Ch16.doc
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.
Use the external 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.
Use only powered hubs.
Make sure that all
unpowered hubs are
immediately preceded by
powered hubs in the USB
chain.
Troubleshooting