DOCUMENT:Q152124  17-JUN-1996  [winnt]
TITLE   :USR-Megahertz 288 Ethernet/Modem Combo card fails
PRODUCT :Microsoft Windows NT
PROD/VER:3.51
OPER/SYS:WINDOWS
KEYWORDS:kbsetup

--------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows NT Workstation version 3.51
 - Microsoft Windows NT Server version 3.51
--------------------------------------------------------------------------

SYMPTOMS
========

The USR-Megahertz 288 Ethernet Combo card XJ/CCEM3288 is configured by
default to function correctly on COM3 with Windows NT version 3.51.
If/when the Combo card is configured for any other COM port, the LAN
portion of the Combo card will function, but the MODEM may not.  The
Combo card configuration can be verified by looking in the Ethernet
configuration window.


CAUSE
=====

SERIAL.SYS and PCMCIA.SYS do not properly configure and share
interrupts for this card.


RESOLUTION
==========

To correct this problem, you must either:

a) reconfigure the card to use COM3 only

... or ...

b) replace your PCMCIA.SYS and SERIAL.SYS files with the fixed
   versions provided.  Instructions for downloading this fix are
   included below.


STATUS
======

Microsoft has confirmed this to be a problem with Windows NT version
3.51.  A fix for this problem is now available (HOTFIX #Q152124) but
is not fully regression tested and should be applied only to systems
experiencing this specific problem.

Unless you are severely impacted by this specific problem, Microsoft
recommends that you wait for the service pack release containing this
fix.  Contact Microsoft Product Support Services for more information.

The fix and the installation instructions can be obtained from the
following location at the Microsoft FTP server:

   ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt351
   /hotfixes-postSP4/Mhz-fix

KBCategory: kbsetup
KBSubcategory: ntsetup
Additional reference words: prodnt 3.51 new shell

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1996.