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"A very fast modem." on by red43big
Pros: Very fast , small with a standby button to troubleshoot
Cons: none at this time
Summary: This modem is rated at 38 mbps max. I received this modem 3 days ago it has been working at 54 mbps.It is small and slim reguiring little space.If you use the usb cable the usb driver is required.I didn't have to call my cable provider.After connecting it downloaded drivers for comcast after I put in account.My laptop and other pc works twice as fast without signal drops.This unit is much faster than the cable provider modem.It has a 1 year warrenty.Both cables are provided.
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"Pretty bad modem. Returned it after 2 weeks" on by griguga
Pros: Seems to work fine (when working)
Cons: Loses cable signal
Summary: Returned Comcast rented modem after buying this modem based on CNET reviews. Worked well for a week, before Modem started recycling on/off losing cable signal. Motorola tech support suggested they would ship out a new one. I paid for shipping cost. (Also beware that consumer is responsible for additional shipping of old modem back to Motorola.) Should have just taken it back to store. Left a bad taste for all things Motorola.
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"iffy hardware" on by istrix
Pros: gets you on with highspeed
Cons: cheap AC adapter
Summary: avoid this if you don't have a router and ever need to move the modem between rooms. the ac adapter is SUPER cheap. I just lost my second adapter. the connections inside come apart and have to be replaced, most places will tell you it's the modem.
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"Great modem" on by Bryan.Muller
Pros: Fast, Cheap, Reliable, Does what it says it does
Cons: Not the greatest looking
Summary: Overall, I'm pleased with the modem, I got mine at Best Buy for around $80, I've had it for about a week now. So far, it hasn't dropped out, seems reliable, and is quite brisk.
The only thing I can really complain about is that the design is somewhat blan, none the less though, this is highly recommended if you have Cable internet. -
"Worked fine for 4 months then started rebooting." on by jscott418
Pros: Setup was easy,just a call to Comcast. Speed and function were fine initially.
Cons: Lasted only 4 months until it started to reboot several times a day. Motorola tech support is worthless as they try and blame the ISP even though Comcast came out and checked the signals. They even admitted the signals were not the problem.
Summary: I would stay away from this modem if I was needing a modem. I was in a pinch when I bought this one. My old modem of several years just stopped working and I rushed out the Walmart to buy one. All they had was this model and so I bought it. The modem did work fine at first but then after I was past the 90 day return policy for Walmart the modem started to reboot frequently. A call to Comcast created a service call to check signals and cable quality. The tech did not find any significant problems. I still had reboots and a call to Motorola tech support was unhelpful as they blamed Comcast even though they admitted the signal levels were fine. After more talk with Comcast I was convinced it was the modem. I went out and bought a modem SB6121 and have not had any issues since. My only conclusion is that something in these SB5101 modems is weak and fails after only a few months. I found that maybe they over heat eventually causing the issue. All I can say is buyer beware.

