USB Interfaces User’s Guide
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If you are working with a product that has recently been renamed, use the PID addresses for this product as well as the PID
addresses for the former name of the product. If the product you are working with appears in the Device column of the table
below, not only must you reference its PIDs, but you must also reference the PIDs of the product identified in the respective
Additional Settings column.
Registry Entries
Windows 9x
This section contains information about modifying your computer’s registry. Before you modify the registry,
be sure to back it up first, and make sure you understand how to restore the registry if a problem occurs.
Entries for all USB devices are under
HKEY_LOCAL_MACHINE
. Inside this key, look for
Enum/USB
.
Every time you plug in a USB device, the OS updates the Enum/USB entries in order to keep track of all the devices it already
knows. If a device is not yet listed, the OS asks you for a driver. Some devices are known by the device class (HID) and the OS
installs the correct class driver automatically. You can delete entries for a given device under Enum/USB, but it is not
recommended because it is possible for COMxx names to become locked. It is better to use the Device Manager to remove a
device from the registry.
Device
Additional
Settings
IT5600
3800r
3800r
IT5600
IT5800
3800i
3800i
IT5800
IT4800
4800i
4800i
IT4800
IT4200
4206
4206
IT4200
IT2020
2020
2020
IT2020
!
