This Modem Keeps Me On Line.
924096
This modem works much faster and more reliably than the one in my old desk top computer.  IT is very reliable.  I am very happy with it.
2438155
I began to suspect that something was wrong with my network gear when my Skype calls kept failing.  I checked my internet download/upload speeds and found them at only 8mbps.  With a bit of Googling, I realized that the cable modem I was renting (for $7.50 a month) from Comcast was nine years old.

This modem was very high on the list of Comcast-approved modems and the online reviews were very good.

I ordered the modem (great price;) got it in a couple of days(great service,)plugged it in (simple as can be,) and called Comcast to let them know to update their settings to the new modem and BAM -- 35mbps download speed.  This is a very, VERY good modem.
58272
It has made my internet connection much more dependable as I am the furthest spot in the house from the modem.... thank you
1457135
It's been several years and it still works. I don't really know what else to look for in a modem so, hey....
4469328
I have Time Warner Cable and I was able to get this thing working easily with only one call to customer service, where I had to tell them about some number on the bottom of the modem.  I've had it a few weeks and so far it's been rock solid, and I was able to gladly return that old modem that they were charging me like 8 bucks a month to rent.  This thing will pay for itself through my reduced internet bill in under a year easily!
4072193
I love the fact that the modem and router are together in this unit.  It handels the higher speeds and works great.
684809
This cable modem was very easy to install.  Best of all, I have not had a single problem with it.  It is super-fast, and am looking forward to stretching its capabilities...!
1694220
I was skeptical when buying this modem since it was refurb, but I have not had any issues with it.

Have had it for more than a month, and it's working well.
484639
I recently upgraded my internet with TWC to 50 Mbps down and 5 Mbps up, which meant I needed to upgrade from my old SB5100 D2 modem. Facing modem rental fees and terrible locked down wifi router/modem combos that TWC and other cable companies are sending out to D3 customers, I decided it was time to purchase my own.

There's not really too much to say here though. This modem has done everything it's been expected to so far. It has the ability to bond to 8 downstream channels, though TWC only offers 4 in my area still. It never has issue connecting and bonding though. Paired with a new RT-AC66U router, this modem offers me rock solid 50/5 connectivity like I pay for. Most everything in the way of configuration is still managed by your provider when it sends it a config file, so you basically just set it up and if everything works, you shouldn't even have to think about it again. I haven't noticed any lag at all, let alone any that I could blame on the modem. No reboots that I've noticed. It just does what it's supposed to and just works. As with any product, I've read issues that some people have, but so far I've had no and have been very pleased.
1112017
Purchased this Modem 5 Months ago, and it's still kicking Like new, I use it with Comcast Cable the Speed is awesome I love how you can Modify admin settings on this like you're Unable to do with the Comcast Cable Modem, save yourself over $100 a year by buying your own Modem this one is worth every penny.
488573
Like many, I purchased my own modem after Time Warner Cable announced a $3.95/month charge to "maintain" my internet modem.  Well, I've had the same Time Warner modem since 2005, which means they wanted me to pay them nearly $50/year for an eight year-old modem.  The least they could have done is offer me a new modem to lease, but apparently that's not part of their business plan.

This modem is slick, sleek and easy to set up.

I will mention that I spent 35 minutes on hold with Time Warner before I ever reached a live person, and this was at 10 p.m. on a Thursday night.  Not exactly peak hours I would think.  The rep was able to recognize my MAC address and get me connected quickly.

However, even though the rep showed the new modem active, I was not able to access the internet nor did my Ooma phone service work (I called TW on my cell phone).  As friendly as the rep was, she did have to point out that her job was only to make sure the modem was recognized and functioning. Any other problems with third-party products (such as Ooma) were, well, not her problem.  I understand this.

For those of you with an Ooma device that's set up according to Ooma specs (i.e. cable modem --> Ooma base --> Router), if you're having trouble after you've registered the new modem, try power cycling the new modem. (That is, turn it off then back on again after 10 seconds).  That worked for me and everything came up and has continued to work fine.

I have registered faster download speeds since installing this modem, which is a very nice plus in my book.

Also, not to malign Time Warner on all counts, the rep did say she would send me a postage-paid box to mail their modem and power cable back to them, since the closest TW center is over twenty miles away and I balked at bringing it to them myself. (If you don't ask, you don't get is my philosophy).  That being said, it's been nearly two weeks and I still haven't received the box.  Time Warner did however prorate the new lease fee on my most recent bill, so I'm confident I won't be charged anything else for the old modem.
1832295
In the year or more since I bought it I've only had to reboot it twice.  Otherwise it's been a silent featureless workhorse, exactly what a cable modem should be.
4435179
Easy to get up and running, the Comcast installer called their people to activate the modem and it saves me money over renting one from them. Stays running all the time, I never have problems with it.
3691803
This modem does it job well and saves me money. I bought it because it is on Comcast's  list of acceptable routers and I didn't want to pay the $8 monthly rental fee any longer. The modem was quick and easy to install. I hooked it up, called Comcast, and read them the information. It started working immediately and I have never had a problem.
2422312
If you depend on a modem to connect to the internet, you should pay for a good quality one. This external modem works very reliably and is easy to install (you will need to buy a serial cable for it.) The instructions are clear. It also comes with very nice software for fax, voice mail, e-mail and computer terminal emulation. The modem will also work with Linux as well as Windows.
1588611
I decided to upgrade my mother's Internet service from Verizon DSL to Comcast Xfinity so I needed a modem.
This one was listed as being compatible so I thought Id give it a try.  Ive always owned Motorola (now Arris) SURFBoard modems and never had any trouble so I was a little leery but I must say this one is equally as good.  The user interface is obviously different but I had no trouble navigating and finding the information I needed.  The package contained the usual equipment, the modem itself, a power supply, and an Ethernet cable.  The power supply is nice as the prongs allow it to be plugged into a power strip and only consume a single socket where some others block more than one.
When the installer came my need was to see if the connection was good and the built in signal meter did the trick.  I could see that multiple channels were connected before I let the guy leave (didnt want to have to arrange a second visit from the cable guy). One small hiccup was when I called for new service they were a little confused with a TP-Link modem, it took them a bit to find it in their system as a compatible modem.
Physically the modem isn't quite as nice as my Motorola 6120, which has is pretty compact, this one is a little bigger and has a rounded shape to it.  I like a more square shape as it is easier to mount on the wall.  This certainly has no impact on the functionality and really is just a personal preference as I mount them in the basement and run an Ethernet to a switch near the computer.
My only concern is it seems to run a little warm, not hot, but warmer than my Motorola so Im not sure if that will cause issues in the future (premature failure).  Since it is in the basement it really isn't an issue for me, but something to keep in mind. Overall I am happy with this modem and would recommend it to others.
2023884
In October 2014, I purchased a used modem from Alteko to replace the Comcast rental modem I had.  It installed cleanly and has worked fine for about a month so far.  I am using it for internet use only (as opposed for use with Comcast telephone service -- I use VoIP for my "landline" phone service.)
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4/20/15 Update:  Purchased a second used modem from Alteko to upgrade my parents' Comcast internet/telephone service in the Eugene, Oregon area.  Installed easily and has been working fine for a few weeks. // The first modem I purchased for myself continues to work fine.
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