June 4, 2015 - Warren Held
Radioshack Gigaware USB-to-Serial Adapter Windows 7 Driver
I bought a Radioshack Gigaware model 2603487 USB-to-serial adapter a couple years ago and haven’t used it very often. It seems like every time I go to use it I have to scour Google for ages to find the driver. For some reason I don’t see it on Radioshack’s website. Well, I finally found it yet again and decided I should post it here. I’m sure I’m not the only person looking for it.Gigaware_USB-to-Serial_Driver
To install the driver, open up Windows Device Manager and find the USB-to-serial adapter. Right click and select Update Driver Software. Choose “Browse my computer for driver software” and navigate to the folder where you extracted the files.
As Mike pointed out in the comments, the guts of the Gigaware cable are based on the Prolific PL2303 chip. If the above driver doesn’t work you can also try the driver located at http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41.