Last Updated: November 5, 2020 (Refresh Now)
Motorola MB8600 DOCSIS 3 1 Cable Modem 6 Gbps Max Speed Approved for Comcast Xfinity Gigabit Cox Gigablast and More Black
Last Updated: November 5, 2020 (Refresh Now)
8.0
SCORE
/10
Total Reviews
1000
Old Reviews
224
Unverified
41
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Yes
WIFI
HDTV 720p
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Review Analysis - 735 recent, verified reviews
Detailed Mode
ISP
323comcast, xfinity, motorola, cox, router
+83%
-17%
" ... I bought this so I didn’t have to rent gear from Comcast. ... I have it plugged into a Netgear Nighthawk X6 and I have no issues at my 500mbs tier. ... "
" ... It is internet phone capable (which is different), but Comcast in my area offers phone service as well, and this modem does not support that type of connection. ... "
" ... Works fine and after Cox fixed their outage, it was immediately on. ... "
" ... Best modem I have ever bought better than any other modem on the market definitely definitely recommend this one no doubt about it my last one was overheating this one doesn’t have any issues with that or connectivity issues highly recommended!! ... "
" ... Works great right out of the box for Comcast/ Xfinity ... all you have to do is connect to coax and router, input your account. ... "
" ... Looks like my problems really were due to my ISP. ... "
" ... I bought a router in conjunction with this modem. ... Modem worked great, right out of the box. ... "
" ... This modem takes me right to that limit. ... "
Setup
166setup, easy to install, install, easy, comcast
+96%
-4%
" ... It's more of plug and play, I was able to quickly set it up and get the bandwidth I signed up for. ... "
" ... I would give a rating 5 for the easy installation, but I gave 4, and it is not Motorola fault, it is due to the issue of Xfinity. ... "
" ... Took a few minutes to set up. ... "
" ... The install was pretty easy, with one exception . ... "
" ... Easy to setup and fixed my Xfinity connection issues caused by an older cable modem. ... "
" ... easy to install works great with Media Com Internet for the ISP Along with a ASUS Rog Rapture ax11000 WiFi 6 router. ... "
" ... it was surprisingly easy to set up. ... "
" ... Haven't had any issues so don't know about tech support but it is easy to install and working perfectly. ... "
Product Reliability
121died, modem, failed, motorola, far
+44%
-56%
" ... Before i had an Arris with the horrible puma 6 chipset and constant connection issues. ... "
" ... Worked great for 18 months but died. ... "
" ... Update 2-23-19: started losing connection after less than a month, returning now. ... "
" ... After approximately 3 months, the modem just stopped working. ... "
" ... Purchased two months ago, would not recommend product ... "
" ... Some of these were from six month ago, so clearly Motorola hadn't addressed it by the time we bought. ... "
" ... Worked but barely. ... "
" ... I only had this for about a month before I returned it, but only because I'd ordered two. ... "
Network
115modem, signal, wifi, speeds, mbps
+70%
-30%
" ... I finally thought I had it figured out and was my Netgear Nighthawk. ... "
" ... I have 1000mbps download service for $84.99/month with my own modem and great coverage throughout the home. ... "
" ... coupled it with an Orbi router and orbi satelites for a mesh system. ... "
" ... No WiFi, but faster speeds then my Xfinity modem/router. ... "
" ... This modem along with a new TP Link AX6000 router really upgraded our internet speed. ... "
" ... + Solid connection, no internet or signal issues at all ... small network cabinets like mine) ... "
" ... Strong connection and works great. ... "
" ... It improved the speed of my home network tremendously. ... "
Ports
91ethernet, gigabit, coax, cable company, motorola
+82%
-18%
" ... Easy to setup and fixed my Xfinity connection issues caused by an older cable modem. ... "
" ... If you do have issue, contact your cable company they may have to add the serial number to their system. ... "
" ... Absolutely best cable modem I have had. ... "
" ... tech connected cable, powered it on, service worked - cable internet install was over in no time. ... "
" ... I use it with Cable ONE's GigaONE gigabit Internet plan (1000/50). ... Cable ONE hasn't upgraded to DOCSIS 3.1 yet, but this modem works great on their newly upgraded DOCSIS 3.0 infrastructure. ... This cable modem is awesome. ... "
" ... Excellent cable modem after you get it working. ... "
" ... The most I’ve squeezed out of it via Ethernet is about 800 ... "
" ... This modem delivers, but remember keep in mind you have to use a router in order to use multiple devices in your home. ... Note- There are cable modems out there that are combination modem/routers. ... "
Overall performance
88speeds, mbps, stable, tests, mb
+94%
-6%
" ... Excellent quality and speed. ... "
" ... I ran speed tests (download and upload) and I'm very pleased with this upgrade. ... "
" ... I have clocked download speeds of 924mbps, and upload speeds of 41mbps. ... "
" ... If you forget all about it, then it's doing a great job. ... "
" ... Reached greater speeds too! ... "
" ... seems to do its job well ... "
" ... Sure it cost more but it works as intended and is future ready should i ever decide to move to the 1 gig speeds. ... "
" ... + Receiving speeds of ~350/30 Mbps on a 300/30 plan ... "
Ease of Use
78easy to install, setup, easy to set, simple, set
+97%
-3%
" ... Setup was fairly easy via a simple phone call to Xfinity. ... "
" ... I haven't had to reboot it & it was very easy to set up. ... "
" ... The device arrived very quickly and was very easy to set up. ... "
" ... Easy to install. ... "
" ... easy to install ... "
" ... Easy to install! ... "
" ... It was easy to install and has performed problem free and as I expected. ... "
" ... It was pretty easy to set up. ... "
Device Compatibility
63xfinity, mac address, mac, router, connectivity
+67%
-33%
" ... Disconnect your computer's network cable from your computer. ... Turn off your computer. ... "
" ... You do need a separate router if you're connecting multiple devices or a switch. ... "
" ... I have a dual boot computer so I thought I would boot into Windows 7 and give it a try. ... Neither Windows 10 or Windows 7 would allow me to connect directly from the Modem to my computer. ... "
" ... We haven't had any lagging or any buffering and at peak usage with all persons at home, we have up to 4 smart phones, 3 laptops, 2 iPads and the smart tv all running with no connection issues. ... *Now we haven't had all those at once pulling wifi but easily the phones, laptops and tv are continuously. ... "
" ... I'm using both 2.4 GHz and 5 GHz for multiple devices. ... "
" ... Used to connect my computer to the outside world. ... "
" ... This all worked without a phone call or chat with Comcast. ... "
" ... I did have to call Comcast and give them the MAC address to activate it. ... "
Wifi
60router, modem, wi fi, xfinity, wireless router
+82%
-18%
" ... Power down your wireless router as well. ... Power up router next . ... Go into your router's webpage and setup desired SSID's, etc as before, if necessary. ... "
" ... I am using an Erro Pro wifi router with 2 beacon hubs and setting up my new modem and connection to Erro was S I M P L E. I'd conservatively estimate 10-15 mins after contacting Cox, to getting your in-house internet back online with your new modem and router. ... It's been a week with the new Motorola modem in place with my Erro wifi router and these two work fantastic together! ... *Now we haven't had all those at once pulling wifi but easily the phones, laptops and tv are continuously. ... "
" ... Awesome modem for gigabit wifi! ... "
" ... It appeared that Xfinity remembered the MAC address of my laptop and refused to connect the router. ... "
" ... I use a Google WiFi mesh router with three pucks to get strong wifi anywhere in the home. ... Turned on the cable modem, turner on the Google WiFi mesh router and 3 minutes later everything was up and running. ... "
" ... Wifi and TV ... "
" ... No WiFi, but faster speeds then my Xfinity modem/router. ... "
" ... Xfinity had this router on there recommend page for routers and I bought it and so far it has worked well. ... "
Cables
37company, modem, provider, cox, modems
+73%
-27%
" ... It needed a reboot to get up to speed when the cable guy installed it. ... "
" ... This cable modem is rock solid. ... "
" ... This is one of the approved Modems to work with Cox Cable in Mesa. ... "
" ... Easy to install with your cable company. ... "
" ... Works great and saves me $10 a month on my cable bill! ... "
" ... Excellent cable modem after you get it working. ... "
" ... Although my cable provider needed to build a file for this unit ( they gave me their loaner for three days) this unit pulls a strong signal and provides greater speed than the provider says we are contracted to receive! ... "
" ... Works perfectly with Spectrum (Time Warner) cable. ... "
Software Platform
28modem, xfinity, errors, motorola, comcast
+54%
-46%
" ... See my review for the Roku Ultra below: ... For about three years, I was using the same Roku device that was provided free with my Sling subscription. ... "
" ... I love that I can change the admin password (SB6190 could not). ... "
" ... Called Motorola and found out all it needed was an update. ... "
" ... I have Comcast/Xfinity internet, just plugged it in, opened a browser and it started working without having to navigate the incredibly brutal Xfinity customer service system. ... "
" ... web surfing, streaming, Wi-Fi and IoT (Alexa, nest, etc.,) devices. ... "
" ... Just hook it up and the first time you access the web it'll take you to the registration page for Comcast activation of your new modem. ... "
" ... After about five minutes the modem had connected and the web browser I had up automatically loaded the Xfinity activation page. ... "
" ... Love that it had free return shipping given my error! ... "
Returns
28refund, back, item, returned, sent
+18%
-82%
" ... Tech support started out OK but actually getting them to give you the OK to return the item is another thing. ... "
" ... Retuning for refund. ... "
" ... Broken and not able to return after less than 3 months of use ... "
" ... Last chance to return was March 4. ... It’s March 14th and now I’m out $$ since I can’t return it. ... "
" ... Had to go through such a pain to return mine for a replacement. ... He guaranteed me that I best do as he said because I would never get my money returned after having the item for that amount of time. ... "
" ... I was unable to return the item to add to this scam. ... "
" ... Had to return ... "
" ... I spent too much on this for it not to work four months later but i'm outside of the return window. ... "
Marketplace
24works as advertised, amazon, advertised, described, still
+79%
-21%
" ... Amazon’s one-day delivery made this a sweet purchase. ... "
" ... works as described ... "
" ... Fortunately Amazon still refunded it even though it was past the 30 day mark (Amazon customer service is awesome). ... "
" ... This product is as described. ... "
" ... Works as advertised. ... "
" ... Shipping and product as expected. ... "
" ... Odd thing is the picture showed 4 ports on the back. ... "
" ... Does as advertised. ... "
Internet
21speed, speeds, fast, download, service
+81%
-19%
" ... I now have super fast internet again. ... "
" ... For home internet access ... "
" ... Download/Upload speeds have been very consistent when tested. ... "
" ... then came back with internet access. ... "
" ... Basically Motorola wants the internet carrier to do the support. ... "
" ... We all need fast and reliable internet. ... "
" ... Download speed fast. ... "
" ... Internet speeds are very fast and this modem seems to be a very reliable device. ... "
Price
17money, worth the money, worth, buy, waste
+88%
-12%
" ... This is well worth the money. ... "
" ... I am really pleased with this product, and Amazon had a great price. ... "
" ... In the long run it will save me money. ... "
" ... Pricy, but worth it. ... "
" ... This one at a higher price for myself (MB8600), then a cheaper model (MB7621) for my sister. ... "
" ... Great value for what it is. ... "
" ... Buy one and within a year you will typically start saving money. ... "
" ... I got it at an amazing price ... "
Lagging
16restart, times, reset, restarts, required
+38%
-63%
" ... It requires constant restarts to work. ... "
" ... So far, no drops, no restarts. ... "
" ... A reset restores but clears the log. ... Disconnected and no more resets. ... "
" ... It constantly slows down and disconnects. ... "
" ... This unit continually shutdown and restarted itself at least 40-50 times a day. ... "
" ... I found that pressing the reset button 2 or 3 times in a row would fix the problem. ... "
" ... Now I’m having frequent disconnect issues - about 10 times just today. ... "
" ... What started as a "reboot it once every couple days" is now a "reboot it 4-5 times a day" kind of issue. ... Tried a hard reset, etc. ... "
Delivery
14received, arrived on time, shipping, quickly, promised
+79%
-21%
" ... received it quickly and works great. ... "
" ... As expected arrived on time and works as expected ... "
" ... Shipping and product as expected. ... "
" ... Received the modern on time. ... "
" ... Received very quickly. ... "
" ... Box came open . ... "
" ... Product arrived much earlier than promised and was in perfect working condition. ... "
" ... Arrived on time. ... "
Product As Described
13advertised, product, described, exactly, works
+92%
-8%
" ... Exactly as advertised. ... "
" ... Everything as advertised. ... "
" ... Works as advertised. ... "
" ... works as described ... "
" ... Works as advertised. ... "
" ... Works as advertised. ... "
" ... Product works as advertised. ... "
" ... Exactly as advertised. ... "
Capacity
11signal, wifi, story, internet, home
+100%
" ... small network cabinets like mine) ... "
" ... It’s stunningly fast, even with a large family and several devices connected at all times. ... "
" ... Very good coverage across my two-story home without a repeater. ... "
" ... We couldn't get signal before all over the house, we can now! ... "
" ... The Wifi signal extends a fair distance (not super great), but enough to easily cover a two story 2200sqft home. ... "
" ... They rewired my house. ... "
" ... Using cat5e, 5 locations in my house. ... "
" ... I had a signal extender for my deck but do not need to use that at all nowadays. ... "
Firmware
11modem, updated, latest firmware, vulnerable, motorola
+27%
-73%
" ... In researching this modem - cannot have it's firmware updated by the end user. ... In the end I had to get a modem from the Tech, the modem was bricked - no way to fix by reinstalling firmware. ... "
" ... Did not install easily, calle internet provider 3 times to install and update firmware. ... "
" ... Reached out to Motorola support in January 2019 and they told me there was an issue with the modem firmware and it was pending Comcast approval to push the patches to customers device. ... It took 3 months until the firmware was pushed into my device which I would say, solved the connection drops. ... "
" ... A look at online forums confirmed that many others were having the same issue, and there was no firmware fix. ... "
" ... Can not update firmware! ... "
" ... Cannot update firmware. ... "
" ... It used to work before and with the latest firmware updates, they stopped supporting Wave. ... "
Data reception
8modem, internet, signal, lte, docsis 3
+75%
-25%
" ... Purchased to the replace my first gen Motorola Docsis 3.0 modem after upgrading comcast service. ... "
" ... Your modem is the device that takes the internet signal coming from your service (i.e., Xfinity, Verizon). ... "
" ... After upgrading to MOTOROLA DOCSIS 3.1 Cable Modem I have noticed better Wifi signal strength overall. ... "
" ... Basically Motorola wants the internet carrier to do the support. ... "
" ... I then used my LTE iPad to provide the modem's MAC address to Charter on their modem setup page. ... "
" ... 21 devices on my network, including an Apple Extreme WiFi. ... "
Gaming
6game, never, given, games, speed
+100%
" ... Perfect for HD and gaming. ... "
" ... with no resets allowing for competitive gaming and video conferencing. ... "
" ... So far in my use it has given me lots of stability when using lots of devices streaming and gaming without a hiccup (Old Arris would hiccup). ... "
" ... So I am very happy I never play games through a proxy server any more and I always have a great and stable connection. ... I never lag in games like starcraft remastered or LOTRO or other games like on my PS4. ... "
" ... Speed is the name of the game. ... "
" ... I stand ready for gaming with no bufferbloat and ready for Gig plus later. ... "
Build Quality
6plastic, connections, times, seems, product
+50%
-50%
" ... Took it out of the box and heard a small piece rattling inside. ... "
" ... (For the month that we owned it, it dropped 20 times.) ... "
" ... Broke in 1 year. ... "
For Running
5get, minutes, easy
+100%
" ... I'm running a out 15 devices in my house and have at least 9 of them always online. ... "
" ... It was fast to get activated and running. ... "
" ... I was up and running in under fifteen minutes. ... "
Features
5light, features
+60%
-40%
" ... Has the typical annoyingly bright blue lights, I just hide the whole thing in a cabinet. ... "
" ... Lights all good. ... "
" ... Great auto activation process too! ... "
Hair
5need, knife, get, plastic
+60%
-40%
" ... I can now cut the cord . ... "
" ... Cut the cable recently and installed 5 Roku’s at home. ... "
" ... Not cool, but I'm thinking I can get handy with an exacto knife if need be. ... "
Comfort
5save, hands, feel, better, best
+100%
" ... I’m not a nerd, and this is outside my comfort zone. ... "
" ... I am however glad I held out long enough for this to be on the market! ... "
" ... I got off topic, but feel I needed to get it off my chest and maybe help someone make a better decision and save some money and take back their privacy. ... "
" ... Finally, I put my hands up in surrender and went down to my local Best Buy and picked up a Netgear CM1000. ... "
Defective Delivery
4defective, promised, arrived
+25%
-75%
" ... Either the one i received is defective or broken in shipment. ... "
" ... Hard to believe amazon sells this defective product ... "
" ... Also the seller i bought it from sent me a used opened product even when it was advertised as new. ... "
Speed
4took, mins, 10
+100%
" ... It took a few minutes. ... "
" ... Wait 5 minutes . ... "
" ... Less than 10 mins. ... "
Design
4look
+100%
" ... Might be a little bigger but quite appealing design, almost like a book. ... "
" ... All of which, look more polished and complete. ... "
" ... Looks sleek as well. ... "
" ... And that makes me feel good! ... "
Pedometer
3+67%
-33%
" ... Miles ahead of what I was using before. ... "
" ... I had to go through a few steps to authorize the new modem which took about 15 or 20 minutes. ... "
Resolution
3streaming, hd, gaming, modem
+100%
" ... Perfect for HD and gaming. ... "
" ... I can do multiple HD applications at the same time. ... "
" ... Great modem for gaming and 4K streaming! ... "
Power Consumption
3device
+67%
-33%
" ... Good SNR and power levels. ... "
" ... I like the way it looks on the desk, the separate power switch is a nice feature and low heat of the device. ... "
Call quality
3motorola, back, tried, told, hung
+33%
-67%
" ... On Wednesday morning, I tried calling Motorola again. ... This call lasted 1 hour and 3 minutes, and I got hung up on again. ... I even tried getting up a 3 AM to call. ... "
" ... Then his laughter got even louder and his tone changed to very condescending when I told him I would call Amazon and just get my money back for this defective item. ... "
Charging
3month, modem, keep, docsis, charge
+100%
" ... Bye bye monthly rental charge. ... "
" ... Make sure they drop your rental charge (they will hit you for a full rental for a partial month). ... "
" ... They keep pushing all these neat cool features and keep charging more and more, and just keep getting more and more access to your networks, makes absolutely no sense to me, why pay some one to have access to everything, I don’t understand. ... "
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