This was a certified repair. Error on my part. Arrived quickly in good condition. Easy to install. Turned on and works fine. For 2 or 3 weeks. Then it started rebooting on its own and spent 20-30 minutes looking for an incoming signal. It got to the point where he would do it 3 or 4 times a day. Very disturbing. I replaced it with an old modem until I bought a working model.
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