Multi-Tech Systems MT4X56USB - Manual (Page 64)

MultiModemUSB User Guide
MT4X56USB 64
Windows 95/98 Troubleshooting
If after installing the Microsoft USB supplement (usbsupp.exe), Windows Plug-and-Play does not
auto-detect the modem, perform the following steps:
1. Open the System icon from the control panel and select the Device Manager Tab.
2. Double-click the Universal Serial Bus Controller icon.
3. Make sure that both the ROOT HUB and HOST Controller are listed. If only the HOST Controller
is listed, remove it and reboot.
4. Open the System Properties dialog box from the control panel and select the Device Manager
Tab. Check for a device labeled ? UNKNOWN. Double click UNKNOWN and check for a HOST
Controller or ROOT HUB. If listed, remove them and reboot. If, after rebooting, the Add Hardware
Wizard finds the USB devices and requires new drivers, such as uhcd.sys, the drivers can be
found in the /windows/system directory.
Determining Why USB Support Is Not Present
This section is for Windows 95 users only. The DETAILS button in USBREADY can help you
determine what is preventing USB support.
1. Click the DETAILS button. If the USB Class Host Controller window reads, “No USB Host
Controller Found” then the necessary hardware, a USB Host Controller, has not been detected.
If your PC does not have USB connectors, then this system will not support USB regardless of
the Windows version.
2. You will need to purchase a PCI USB controller card.
3. If your PC does have USB connectors, verify that the USB hardware is enabled in your system
BIOS configuration.
4. If the USB Class Host Controller window displays any other message, such as “Standard,”
“Intel,” “Universal,” or “Open” Host Controller, then hardware support is present, but an
incompatible version of Windows is currently installed.
5. If the Test Results Details dialog shows Windows 95 version 4.0.1111, which is Windows 95
OSR.2, proceed to “Installing Microsoft USB Support”. You will need to upgrade to OSR 2.1 by
installing the USB supplement before installing the modem.
Installing Microsoft USB Support
This section is for Windows 95 users only. Microsoft provides a supplemental program (usbsupp.exe)
to allow users to upgrade Windows 95 version OSR2 to support the Universal Serial Bus. To install:
1. Insert your Windows 95 CD into your CD ROM drive.
2. In the START menu, select RUN.
3. Type <CD drive letter>:\other\usb\usbsupp.
4. Follow the instructions on the screen.
5. After rebooting, go back to step 1 in “Verifying That Your System Supports USB” in Chapter 2 of
this manual.
6. Ensure that the Test Results Details (from the Details button in the USB System Checker dialog)
displays Windows 95 version 4.1212 or higher.
Note: Windows 95 version 4.0.950 or 4.0.950a does not support the upgrade path to USB. Microsoft
does not provide an upgrade path to OSR2 from earlier versions of Windows. OSR2 must be
preinstalled by your PC vendor. Contact your PC vendor for more information.