Rating: 
Summary: Great modem
Review: I purchased this modem on Amazon with free shipping option. It arrived twice faster then claimed. The biggest problem with installation was to give MAC ID and the other stuff over phone to the Cox.
I rented Toshiba's 1100 cable modem and replaced it with this one. Motorola is great and I'm sure I'll not need another one for a while :)A++++++++++ Thanks
Rating:
Summary: Rocks dude....
Review: it's worth the upgrade from the 4200 "this new model has a very nice looking design" installed without any problems A++++++++++++++++++
Rating:
Summary: This Modem Rocks dude....
Review: it's worth the upgrade from SB4200 =i love the new design of the 5100= installed NO Problems!!
Rating: 
Summary: Major VoIP Problems; had to switch to another router
Review: Oddly, I had the exact opposite experience compared to another reviewer. I too have Vonage VoIP (Voice over IP) service, connected to a Motorola vt1000v (cable modem->vt1000v->Linksys router->LAN). I tried to place the vt1000v on the other side of the router, as well. Either way, I had the following consistently reproducible problem. When I talked on the phone and began using my computer to access the Internet, I would lose the connection. Strangely, I would not lose it completely: I could hear the person on the other end, but they couldn't hear me. Meanwhile, the internet connection at the computer was down until I hung up the phone, at which point the connection came back. I switched the SB5100 with a Linksys BEFCMU10 cable modem, and the problem disappeared immediately! I had just switched to the Motorola that same day, and I thought that the problem was either with my ISP or I just had never noticed it before (I don't usually surf and talk at the same time). But now I'm convinced it was the modem. Incidentally, the Vonage tech support rep suggested that I upgrade the firmware of the Motorola cable modem due to "known issues." It turned out that I had the very latest firmware already. Note the irony, by the way, that a Linksys modem worked better with a Motorola ATA (the VoIP device) than a Motorola modem. It's too bad I had this problem, because I think the voice quality using the SB5100 (when it worked) was actually better than with the Linksys, and everything else about the SB5100 worked fine, too. So, if you're not interested in VoIP, I suppose I would recommend this modem.
Rating:
Summary: Works Like a Charm!
Review: I've been using this modem for a little over a year now, and I've never ran into any problems whatsoever. I used to pay money to rent a Toshiba cable modem from Cox, and buying this modem not only saved me a lot of cash but enabled me to enjoy a problem-free net surfing experience with high speed downloads/uploads. A must-buy if you prefer not to rent a cable modem.
Rating:
Summary: Motorola did it again
Review: I'm a comcast user and I've been using motorola for the past 4 and a half years now. Before Motorola, Comcast gave me 3 different RCA modems within a period of 2 weeks (all would reboot by themselves at least 3 or 4 times a day). After telling them to take their p.o.s. modem back, I purchased a SurfBoard 4100. It ran without a hitch for 3 years straight, before the internal power supply failed (opening up the box and connecting my own power supply in it's place proved so.) However, being in the school that believes when one part fails everything else is bound to fail, I decided to replace it with another modem. Motorola had just released the 5100, so being that I had great luck with the prior 4100, I bought it. It's been a year and a half now, and the modem is still running beautifully. Comcast just recently bumped up their speed to 4 mbps down and 384 kbps up, but I opted for the 6 mbps down and 768 kbps up package. On my iMac G5, I average 5.9 down and 740 up with Firefox and Mac OS X 10.3.7. When doing the same test on my hybrid Win2k/Linux box, it received 4.8 down and 720 up in Windows and 5.8 down and 730 up in Linux (AMD Athlon64 3700+). While older computers may not reflect the performace that these recent machines have, the connectivity is what really shines with Motorola. With an exception of signal interference and an outage during the system upgrade, it stays connected no matter what. I added packet8 phone service recently, and it's just perfect. This modem is one of my favorites (the other two being the Arris Touchstone series and the Toshiba 2600), and is the best value on the market today.
Rating:
Summary: Happy Motorola Surfboard SB5100 Cable Modem User
Review: I bought this product from Amazon in April 2004. I bought this modem after renting a cable modem (COM21) from Comcast for over 3 years. With my old cable modem, I was losing my Internet connection frequently. I went to my favorite broadband sites and posted that I was looking for a new cable modem. This modem was mentioned more often than other brands. Since I bought it, I've had very little problems. I've only lost one connectiob with it once. That was during a winter storm in early January 2005. I use a 4-port Linksys router along with a 16-port Linksys switch workgroup.
Rating:
Summary: Great modem!
Review: Unlike some other people, I will not give this modem a bad name because so and so's customer's service or if I couldn't connect because of windows or a virus. If you can't get the connection going, don't call motorola, fix your computer. Set up couldn't be easier. Windows XP automaticly installed the modem from a driver database. For my computer with 98, I just used the driver CD and was done in 5 minutes. There is always a stable connection. I personally experience speeds of 735K which is blazing fast!
(P.S. Microsoft OSes say that you can get updates from a 33.6K dial-up modem, but today, you really need broadband to be able to download anything.........................................)
Rating:
Summary: It Works
Review: We moved to a new house with Comcast Internet service - our old RCA cable modem constantly lost the signal. We thought it was time to replace it - and based on reviews, and the fact that we were using a Linksys wireless router (wonderful product) - we went with the Linksys cable modem. It too was unable to retain the internet signal from Comcast. Numerous trips from Comcast techs - who replaced wires and connectors - said it had to be the modem. I didn't believe them - but, out of frustration, purchased the Mororola Surfboard 5100 (one was going to be returned.)
Called Comcast with the new MAC and S/N and plugged it it. It hasn't lost the signal once! The family is happy again, and no longer says, "The internet is down, can you fix it?" I don't know what makes this modem unique - but it works well with our (less than stellar) Comcast service. Download speeds from DSL reports top out at 900 kbytes - about twice what we've seen from Linksys or RCA modems. Upload - about the same - 240 kbytes. Give it a try - it works for us.
Rating:
Summary: Good product - bad service
Review: I have the modem and it works okay - I ran into a problem with the ethernet port when I attempted to hook up to my wireless network at home and could not get support for the product from Motorola - I went round and round with their auto-email and finally gave up - they seem to have little interest in resolving actually comsumer problems
| 
