There are many OEM's that use the Atheros AR5005UG chipset for their USB WiFi adapters. Because this is a generic driver from the manufacture there is a chance that the device id may not be included for your device in which case you may need to do a force install of the driver. see How to Force install a Driver
Atheros AR5005UG USB 2.0 WiFi Network Adapter
File: atheros-ar5005ug-x64.zip
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Atheros AR5005UG USB 2.0 WiFi Network Adapter
File: atheros-ar5005ug-x86.zip
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AR5005UG Specsheet
File: AR5005UGBulletin.pdf
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