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You were looking for: USB\VID_0BAF&PID_0121
Select the driver for your operating system and its bit. It is recommended to install a later version of the driver (see the release date).
To go to the download file, click on the link.
|0baf||0121||U.S. Robotics||USR5423 802.11bg Wireless Adapter [ZyDAS ZD1211B]