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Writer: J Abercrombie Project: Chapter 15 Comments: 113733-001
File Name: P-CH15.doc Last Saved On: 5/18/99 3:23 PM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Solving USB Problems
Solving USB Problems
Problem Possible Cause Solution
External device
connected to the USB
connector does not
work.
The computer is
running
Windows NT 4.0.
When the computer is running
Windows NT 4.0, only two tiers are
supported by the USB connector.
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.
External device
connected to the USB
connector does not
work during
startup (before
Windows 95 or
Windows 98 loads).
During startup, only
two tiers are
supported by the
USB connector.
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.
Use the external device only after
Windows 95 or Windows 98 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.
A New Hardware
Found message
displays although the
external device was
previously recognized.
The device was
previously
connected to a USB
connector on a
docking base.
No action is required.
Connect the external device to the
same USB connector each time.
Continued