relnotes.txt Driver File Contents (4001865D.exe)

                             RELEASE NOTES
            R1.12 AccelePort(R) USB driver for Windows 95/98
                  (c) 1997-2000 Digi International Inc.

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Software Driver (Win95) P/N:  40001865D
Software Driver (Win98) P/N:  40001850D
Source Code P/N:              81000106D
Release Notes P/N:            93000337D
========================================================================

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INSTALLATION NOTES

-- Make sure that you are running a USB-enabled version of Windows.
Windows 98 and Windows 2000 both support USB.

Not all versions of Windows 95, however, support USB.  Support was
introduced in Windows 95 OSR2.1, a service release of Windows 95.
(Windows 95 OSR2.1 is Windows 95 OSR2 with a patch, USBSUPP.EXE,
applied.)  Many of the large OEMs are now shipping Windows 95 OSR2.1
with their machines, and members of the Microsoft Developers Network
were provided copies.

Perhaps the easiest way to find out whether or not you have Windows 95
OSR 2.1 is to open "My Computer," "Control Panel," and then
"Add/Remove Programs."  If "USB Supplement to OSR2" appears in the
list at the bottom of the "Install/Uninstall" tab, then you do indeed
have Windows OSR2.1.

You may not, however, have the most recent version.  To determine
whether you do or not, find USBSUPP.EXE on your installation media or
USBD.SYS on your hard drive.  Right click on the file, select
"Properties..." from the pop-up menu, and then select the "Version"
tag.  If the version indicated is 4.03.1214, you have the latest
version as of this writing.  (Version 4.03.1212 was buggy and should
be avoided.)

-- During driver installation, Windows 95 may get confused about the
location of the Central Data files.  If you get a dialog box reading
"The file cdusb.sys on Windows 95 CD-ROM could not be found.  Insert
Windows 95 CD-ROM into the drive selected below and click OK," be
aware that CDUSB.SYS is a Central Data file and is not present on the
Windows 95 CD-ROM.  You should edit the path (or use the "Browse..."
button) to indicate the location of your Central Data installation
media.  For example, if you are installing from floppy, enter "A:\" or
"B:\" as appropriate.  If installing from CD-ROM, enter
"D:\WIN9X\USB\" (assuming your CD-ROM drive is D).

-- You can quickly determine whether or not the driver for your USB
serial port server was correctly installed by opening "My Computer," "Control
Panel" and then "System."  Click on the "Device Manager" tab.  At or
towards the bottom of the list should be "Universal serial bus
controller."  When expanded, it should have listed underneath it
"AccelePort(R) USB 2/4/8"  The COM ports corresponding to the serial ports
on the USB-4 will appear under "Ports (COM & LPT)" a bit higher in the
same list.


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RELEASE NOTES FOR R1.12

The following changes were made to Digi International's AccelePort(R) USB 
serial port driver since R1.11 

1. Fixed the problem where the parallel port has serial type 
   configuration attributes

2. Fixed the problem where COM ports are duplicated during 
   install.

3. Fixed the problem where serial parameters set in Device 
   Manager are not preserved across machine reboot.

4. Fix the modem auto-detection problem.
   (PC hangs during auto-detection on USB-2 with R1.11 driver)

5. Modified the interface between the VxD and WDM drivers
   to improve the reliability of the driver, especially
   during dial-up networking.
   
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RELEASE NOTES FOR R1.11

The following changes were made to Digi International's AccelePort(R) USB 
serial port driver since R1.09 (There is no official R1.10 release):

1. Fixed the problem that caused AOL dialup program to fail.

2. Changed the way incoming serial data are handled internally. This fixed
   a problem that many applications experienced, including PC Anywhere, Windows
   CE service, and applications using Visual Basic COMM library.

3. Fixed the problem that failed to resume printing job on some printers when
   an error is detected (e.g., out of paper) and later recovered.


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RELEASE NOTES FOR R1.09 

The following changes were made to Digi International's AccelePort(R) USB 
serial port driver since R1.07 (There is no official R1.08 release):

1. Added a utility program "deldgusb.exe" that removes all driver files,
   setup files and registry data for AccelePort USB devices.

2. Reduced data transfer latency. 

3. Fixed the bug that caused some machine to crash/reboot/hang when the machine
   boots with AccelePort USB devices attached or when a serial port on the USB
   devices is accessed.

4. Fixed a few Fax/Modem related problems. 


Known problem: WinFax Pro and Windows CE Services only work on Windows 98, but
               not Windows 95.


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RELEASE NOTES FOR R1.07

The following changes were made to Digi International's AccelePort(R) USB 
serial port driver since R1.06:

1. Changed all references of "Central Data" to "Digi International,"
   reflecting the July 1998 acquisition of Central Data Corporation by
   Digi International.  All USB serial products will continue to be 
   supported by this driver package.

2. Fixed the bug that caused some applications (e.g., Windows CE Services)
   to fail which use direct cable networking.


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RELEASE NOTES FOR R1.06

The following changes were made to Central Data's USB serial port server
driver since R1.05:

1. Adds support for USB-8.

2. Bug fixes:
   o Default DCB values are added for each serial port.
   o A bug that caused connection failure in Dial-up Network.
   o A bug that caused long delay when disconnecting from Dial-up Network.


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RELEASE NOTES FOR R1.05

The following changes were made to Central Data's USB serial port server
driver since R1.04:

1. Adds support for USB-2+.

2. Adds two new flow control modes: (Currently only USB-2+ supports them)
   o DTR/DSR handshaking.
   o RTS toggling.

2. Several bugs are fixed.
   o An INF file bug that prevented the user from setting communication 
     parameters of serial ports in HyperTerminal.
   o A driver bug that caused communication problem with Digital Cameras.
   o A driver bug that caused incorrect version of driver files to be 
     displayed.

3. Installation and updating guide for R1.05

   o On a machine that never has an early version of CDUSB driver installed,
     just attach the USB-4 unit, hardware wizard will guide you through the
     rest of the installation. No reboot is required at the end.

   o On a machine that has R1.04 of CDUSB driver installed, simply follow the
     driver update instructions in our software installation/updating booklet.
   
   o If R1.03 or an earlier version of CDUSB driver is installed, run the 
     program cleanup.bat on the release diskette. Then update the CDUSB 
     driver as described in our software installation/updating booklet. 
     After the driver is updated, reboot the machine. When the machines 
     comes up, hardware wizard will automatically install COM and LPT ports. 
	 No reboot is required at this point. 


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RELEASE NOTES FOR R1.04

The following changes were made to Central Data's USB serial port server
driver since R1.03:

1. Adds support for multiple USB-4 devices

2. COM ports are assigned dynamically. When a USB-4 device is attached,
   the lowest 4 contiguous COM ports are assigned. For example, if COM1
   and COM3 were taken by other devices when a USB-4 device is attached, 
   COM4, COM5, COM6 and COM7 will be assigned to the USB-4 device. If 
   COM1 and COM7 were taken, COM2, COM3, COM4 and COM5 will be assigned.

3. Driver is true Plug-and-Play. COM ports are added when a USB-4 unit is
   attached, and are removed when a USB-4 unit is detached.

4. Installation and updating guide for R1.04

   o On a machine that never has an early version of CDUSB driver installed,
     just attach the USB-4 unit, hardware wizard will guide you through the
     rest of the installation. No reboot is required at the end.

   o If an early version of CDUSB driver has been installed, run the program
     cleanup.bat on the release diskette. Then update the CDUSB driver as 
     described in our software installation/updating booklet. After the driver
     is updated, reboot the machine. When the machines comes up, hardware
     wizard will automatically install 4 COM ports. No reboot is required at
     this point. 


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RELEASE NOTES FOR R1.03

The following changes were made to Central Data's USB serial port server
driver since R1.00:

1. Modem auto-detection is now supported.
 
2. The setup file, CDUSB.INF, was fixed so that serial parameters can
   be specified for use by HyperTerminal.
 
3. ClearCommError() now correctly reports the amount of data in the
   input and output queues.
 
4. USB read requests are no longer posted when no ports are open.
   Some USB controller chips can impose a high processor load when
   there is a pending USB request.
 
5. Support for Windows 95 was added.


Should you have any questions about this driver release, please
contact:
 
Technical Support
Digi International
11001 Bren Road E.
Minnetonka, MN 55343

Phone: 1-612-912-3456
Fax: 1-612-912-4958
E-mail: support@dgii.com 
WWW: http://www.dgii.com/
FTP: ftp.dgii.com

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Copyright (C) 1998-1999 Digi International
All Rights Reserved.
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How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

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