Happy that I was able to connect at the 1gig speed that was paid for, even though my modem was not on the Optimum Online/Altice certified device list. After doing much research I took a chance to purchase this modem. As an IT specialist, I purchased 3 different modems at the same time and decided 1 out of 3 is going to work and I can return the other two. I opened this Motorola first being that this is the one I really want to keep and was determined and hopeful that this modem can be provisioned and run at the service I paid for. After one additional call to Optimum, the Tech and I were able to have this up and running at full speed in less than 10min. I Never had to open the Netgear or the Arris and just returned them the next day. So for the record anyone looking into 1Gb service with Altice/Optimum you will be happy to know that this modem works like a charm. Yes, you will be told that it's not a supported device (all that means you will have to do your own support/troubleshooting) being that it's not on their approved device list, but being that it's DOCSIS 3.1 you should have no problem just have them reboot your device after the first hour of service and be sure to use CAT7 and you should be fine. (See attached photos)

I was looking for a modem that supported Docsis 3.1 and that wasn't a small form factor like the Arris SB8200 so it wouldn't have any overheating issues. At first I was skeptical since I had never used a Motorola/Zoom modem before. After almost a month with no issues, disconnects or slowdowns, I can say that this modem is very reliable! Fully supports my Xfinity Gigabit connection, and even looking at the Connection page when logging into the modem, I see single digits of Correctibles and zero Uncorrectables after a month! Very impressive!

I bought this to replace my Motorola model SB 6121. The data transfer is well over 500 MBS, and integrates seamlessly with Cox services. Installation is a breeze, and all you have to do is contact your cable or Internet provider and have them register the modem. Works EXCELLENT, and I save money by not having to rent a modem from Cox. Good quality, outstanding performance, and a good deal for the money. Highly recommended!

Best one on the market right now. Not super expensive and you'd get every penny's worth at twice the price. Easy to set up. Easy to operate. Works with any router. The MB8600 is simple and effective. Real workhorse. Runs cool and the quality of the Broadcom chipset can't be beat. Nothing fancy, just a fast, stable, reliable internet connection.

First off this modem is small! Second its connects to internet in literally one minute vs my xfinity modem which always took 10minutes fo connect to internet! The speeds have gone from 10mb/s to 80mb/s. Over all im extremly happy i bought it! Saved me from renting any longer at $12 month for a modem. This one is pricey but is darn worth it! Mind you this modem im running a cat7 ethernet cord to my asus ac gt5300 router.