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Altera_Forum
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15 years ago

USB Blaster shown as "Unknown Device"

Hi there, We have a few labs that run Quartus 9.1 SP2 and students can connect up DE2 boards and other USB Blaster devices. All machines are running Windows XP with SP3. Lately I noted th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

In the Unknown Device Tab, have you tried adding the driver manually there? The USB-Blaster Driver Files can be found in the Quartus installation directory, so just try to add them again. And you will have to make sure, that everytime the same USB-Port is used, while using the Blaster without administrator rights. So you might only use the Blaster with the port it was connected to, while you installed it on the machine, that is what experience I made. Good luck.