Works right out of the box. I've been using it every day for a few months now. It has this annoying problem where it keeps shutting down. My troubleshooter says it detects a broken wire, then fixes it and then works again for 5-10 minutes. It doesn't dangle in the USB port and is fully plugged in. This happens regardless of which slot I use. It works again. I have excellent reception, 5 bars, 30ft from the router, but running the troubleshooter is annoying when trying to send email. Although for $10 I'm not particularly upset. I think I still use it.
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