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Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem

B&H # ZO53410000J Mfr # 5341-00-00J
In Stock
Free Expedited Shipping
You Pay: $69.97
Product Highlights
  • Compatible with Any Ethernet Port
  • Works with All US Cable Modem Services
  • Download Speeds up to 343MB/s
  • Upload Speeds up to 143MB/s
  • Eliminates Monthly Modem Rental Fees

The Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem is compatible with any Ethernet port on your computer and wired or wireless router. The device is capable of download speeds up to 343MB/s and upload speeds up to 143MB/s, depending on your cable modem service. Supporting both versions 4 and 6 of the Internet Protocol, this modem features flexible network addressing as well as compatibility with all US cable modem services including DOCSIS 3.0, 2.0, and 1.1.

Compatible with any Ethernet port on your computer and wired or wireless router.
Download speeds up to 343MB/s and upload speeds up to 143MB/s, depending on your cable modem service.
Supports both versions 4 and 6 of the Internet Protocol.
Compatible with all US cable modem services, including DOCSIS 3.0, 2.0, and 1.1.
CableLabs certified. Also certified for North American safety, FCC 15B, RoHS, Comcast, Cox, and others.
Interface F-type female 75 Ω (standard coaxial connector)
Ethernet Interface RJ-45 10/100/1000MB/s Ethernet with auto-MDI/MDIX
Data Rate Downstream: 343.074MB/s (8 channels), 42.844MB/s (single channel)
Upstream: 143.36MB/s (4 channels), 35.84MB/s (single channel)
Frequency Downstream: 108 to 1002MHz (edge to edge)
Upstream: 5 to 42MHz (edge to edge)
Modulation Downstream: 64 or 256 QAM
Upstream: QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM
Network Protocols IP, TCP, UDP, ARP, ICMP, DHCP, TP, TFTP, SNMP, HTTP
Security DOCSIS 3.0 (BPI+, EAE, SSD)
Bandwidth DOCSIS 2.0:
TDMA: 200, 400, 800, 1600, 3200, 6400KHz
S-CDMA: 1600, 3200, 6400KHz
DOCSIS 3.0:
TDMA: 1600, 3200, 6400KHz
S-CDMA: 1600, 3200, 6400KHz
Status Indicators Power, downstream link, upstream link, Ethernet link, connection status
Approvals FCC part 15B, CE, UL, and CableLabs
Power Adapter Level 4 energy-saving, switching power supply with 12V DC, 1.0Amp output
Operating Temperature 32 - 104°F / 0 - 40°C
System Requirements Ethernet port via Windows, Macintosh, or Linux computers
Ethernet port on wired or wireless router
Dimensions 6.3 x 4.9 x 1.3" / 16 x 12.5 x 3.2cm
Weight 9.3oz / 263g
Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem
  • Power Cube AC Adapter
  • Ethernet RJ-45 Cable
  • Quick Start Flyer
  • 2-Year Limited Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Zoom Telephonics5341J DOCSIS 3.0 Cable Modem
     
    4.7

    (based on 56 reviews)

    Ratings Distribution

    • 5 Stars

       

      (44)

    • 4 Stars

       

      (9)

    • 3 Stars

       

      (2)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (1)

    94%

    of respondents would recommend this to a friend.

    Pros

    • Easy to set up (33)
    • Fast connection (33)
    • Reliable connection (33)

    Cons

      Best Uses

      • Surfing the web (25)
      • Heavy downloading (20)
      • Networking (18)
        • Reviewer Profile:
        • Quality oriented (28), Budget shopper (9)
        • Primary use:
        • Personal (33), Business (4)

      Most Liked Positive Review

       

      Working well, better than SB6121

      Had upgraded to Comcast 50/10 service and needed to upgrade from my old SB5100. I chose to go with the Motorola SB6121. It was fine for speed, but it rebooted 2-3...Read complete review

      Had upgraded to Comcast 50/10 service and needed to upgrade from my old SB5100. I chose to go with the Motorola SB6121. It was fine for speed, but it rebooted 2-3 times per day. Checking the logs were lots of T3 and T4 timeout errors. Apparently, my signal levels were just on the borderline of what the SB6121 can handle. After doing some online research, I found that many other people were having similar trouble with the SB6121 and better success with this Zoom 5341J. I got it and tried it, it is better. My signal levels are showing a slight improvement (1-2db) and it hasn't rebooted once. Speeds are right where they should be.

      Another big plus for this modem over the SB6121, the SB6121 is a 4x4 modem while this 5341J is an 8x4 modem. That refers to how many channels are bonded. More channels means more potential for speed. My 50/10 service is just as fast as it was with the SB6121, but if I wanted to upgrade to a higher plan, the SB6121 wouldn't be able to go as fast as the 5341J. I'd recommend this modem, it's working great.

      2 things I would like to see improved, 1 is that the LAN LED turns GREEN when connected. I would like it to be BLUE when at Gigabit speed and GREEN when at 10/100 speed (like the SB6121 does). Also is that it was easier to scrape the signals webpage for status monitoring. This was easy with the SB6121, just pull a URL and it had the signal information. The 5341J requires you to login before providing the signal levels. But otherwise it's a great modem that works perfectly.

      VS

      Most Liked Negative Review

       

      Seems to work after 4+ frustrating hours

      In theory the Zoom 5341J modem is very attractive - it can bond eight downstream channels for up to 343 Mb, it does ipV6, and it is approved by Comcast and most everyone else...Read complete review

      In theory the Zoom 5341J modem is very attractive - it can bond eight downstream channels for up to 343 Mb, it does ipV6, and it is approved by Comcast and most everyone else - for seriously less money than the competition. In practice...Mine arrived with a mouse-sized bite out of the insulation on the power adapter cable, with the copper wire showing through. Works, but tacky. I eMailed their support site and the auto-response said they would reply within in 72 hours. It has now been nine days of silence. I powered it up and found the content panes of all the configuration web pages were empty. Just as I was about to give up, I happened to scroll way down one of the pages and found content! Turns out there is a screen and a half of blank space at the top of every web page my Zoom generates! If you print the content, you also get an extra blank page and the content begins partway down the second page. So I tried installing it. It powered right up, connected to Comcast, bonded eight down and three up, flashed its activity light properly, and refused to give either my router or a directly attached computer a DHCP address. When I'd tested it "dry", it did DHCP with no problem. Setting the fixed addresses I could see in Wireshark did not let me access the net either. I concluded maybe Comcast was MAC address locked (turns out they are not), and wasted about an hour calling them and getting no real help. I went back and verified the Zoom did DHCP when it was not connected to the Comcast cable. Turned out the only way to get the 5341J working was to disconnect the coax cable, power it up, connect computer or router, get DHCP, _then_ connect the coax and let it sign on to the mothership. Pretty much the opposite of what you'd normally do. Surprisingly, once it has made this transition, it seems to be able to power up alongside the attached router (the TP-Link TL-WDR3600, a high-spec, low price item that seems to work really well) with no problems. It must retain some state information about its previous configuration, or maybe it just gets the DHCP request before it completes the Comcast connection process. During all of this struggle, it would have been nice to see an internal log, but there is nothing in the config menus. After searching the web I found a clue that you can ask for the log manually. But seeing a log is a game of chance - sometimes if you type http://192.168.100.1/RgEventLog.asp you actually get a log; mostly you get yet another login page. When it works, the page is called "SNMP Event Log". Perhaps if one fired up a proper SNMP client it could reliably retrieve full log items? The log items are not very helpful, some documentation would be nice. For instance:Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC...Most of the entries are chopped off in mid stream like that. So it knows there is a DHCP problem, but that certainly doesn't reveal how to fix it. And while it has the problem, it doesn't put timestamps on the log items, so it is hard to tell which occurred when. It did update its firmware after installation, but I suspect that was forced upon it by Comcast rather than happening automatically via Zoom. Finally, one of the few config pages that actually exists doesn't really work. On the "Security" page it looks like you can change the username and password. Turns out if you type anything other than "admin" in the username box, the change fails. With this utterly un-helpful response:"Error converting one or more entries:Password confirmation failureError: TXOP Max Rate must be in the range 0 to 65535.TRY AGAIN".No clues on the Zoom site. I finally found the secret in someone else's bad review. You actually can change the password, but there is a _maximum_ of eight letters or numbers allowed, with no symbols. If you try anything else you get the same useless error message. No hint at all about the limitations. So I saved $30 and all it cost me was 4.5 hours of frustration trying to set up the Zoom modem. At the moment it seems to work well, providing the same exact throughput as the fancy gateway Comcast wanted me to keep renting. Guess I'll forgive and forget, but if it screws up in the future I'm going to be angry...

      Reviewed by 56 customers

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      5.0

      Great TWC compatible modem

      By ScreamingMimi

      from Left Coast

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I got this to replace my leased TWC modem. It was a snap to set up and after a phone call to TWC to register it I was up and running. After installation my DL was 52.27 UL 4.38. I have not had a problem with it. Very pleased.

      Share this review

       
      5.0

      stop bleeding money

      By confyushis

      from los angeles

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      i was tired of paying the modern rental fee for my internet service. since i already had a wireless router, i only needed a modem. according to time Warner cable's list of approved modems, this modem could support service speeds up to 100mbps, which was more than enough for the 50mbps service i was paying for.hooked it up, called time Warner to activate, returned the rental. running at full speed now and never going back to rental modems.

      Share this review

       
      5.0

      Great Modem

      By zmed

      from Pawtucket, RI

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      This modem was inexpensive, and was easy to set up. I just replaced my old modem and call my cable provider, COX. I gave them the model number and the MAC number located both on the box the unit came in, and on the bottom of the unit. Before hanging up with COX, I was on the internet.

      Share this review

       
      5.0

      Work as expected

      By BG

      from San Antonio

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      Just set up as described in the manual. Called TWC and all was up and running. Most of the time lost waiting a free TWC support.

      Share this review

       
      5.0

      Terrific Deal!

      By Ice-man

      from San Antonio, TX

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      Great high-speed modem at super price and quickly delivered! Bought one earlier in the year so I could ditch my Time Warner lease fee and it's been great - easy install & terrific performance! Just bought a 2nd one last week for my daughter!

      Share this review

       
      5.0

      Reasonable alternative to surfboard

      By taggartist

      from Port Angeles, WA

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      No complaints, this modem does exactly what it is supposed to. Plugged it in, called cable broadband provider with MAC address, and all the lights came on. There is not much in the way of settings that you can change via the web interface, but then again this is NOT A ROUTER. Specs wise, it is on par with everyone's favorite SB6141 but a few bucks cheaper (unless you find a refurbished surfboard for the same price). Having owned similar moto surfboard modems before, I must say I prefer this Zoom because it has fewer/dimmer LEDs. For use in my bedroom, a small piece of electrical tape eliminated almost all of the flashing nonsense, something I struggled with on the surfboards I've owned. Should be future proof for IPV6 support and 8 bonded channels for high speed.

      Share this review

       
      5.0

      33% Faster Up/Down

      By Speedy

      from Pigeon Forge, TN

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      Tested up/down speed on old Comcast modem. After installing the Zoom 5341J, 33% increase in both.While this modem is listed as compatible with Comcast, Comcast doesn't give it the highest compatibility rating on their site. Maybe Comcast gets something for recommending certain brands over others because this modem does everything it should and is completely compatible with Comcast as far as I can tell.The only problem getting the modem working was Comcast. It's unbelievable (in general, but not for Comcast) that you have to talk to a human to get a new modem working. I should say "several humans" because of disconnects and reps that did not know what they were doing. Comcast should be ashamed, but when you're a monopoly in the area with guaranteed customers no matter how poor your operation is, it's easy to take a "who cares" attitude. When will the FTC force city/county governments to license at least two cable carriers for truly healthy competition?

      Share this review

       
      5.0

      This Modem Woirks Great with Comcast

      By BigGeorgeIII

      from Orlando, FL

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I replaced an earlier Motorola Docsis 1.0 modem on my Xfinity Internet with a Motorola 6141 Docsis 3.0 modem and had nothing but problems. I looked at the Comcast forums and it seems that the Zoom 5341J got great reviews. I exchanged my 6141 for the Zoom 5341J and not only was it $ cheaper, but it works better. Highly recommended.

      Share this review

       
      5.0

      Great cable modem for the money

      By Kevin K

      from Franklin, TN

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      The modem replaced my leased Comcast Xfinity Internet modem. Works great. Faster than my older Comcast DOCSIS 2.0 modem, plus love saving the monthly rental fee.

      Please note this modem will NOT work if you have Xfinity Voice & Internet as there is not a telephone plug in this modem.

      Share this review

       
      5.0

      Works perfectly

      By Rachel

      from Ohio

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      We have WowWay internet and it was easy to unplug the old one and have WowWay register the new one. Saves me $60 per year.

      Share this review

       
      3.0

      Zoom Nice But Not Nice Enough

      By Briscoe

      from Lexington, KY

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I'm a long time Zoom user, all the way back to the old PCI 26K days. But since the time I used their newer modem/router combo and now the 5341J, they exhibit a tendency I find annoying. Periodically, they disconnect from the Internet. It's random. The modem works perfectly, then at some point which can be days, or weeks later, it disconnects. Turning it off for 10 seconds then back on solves the issue. But I detest the frequency of the incidents. I had thought the modem/router doing this was due to sharing two devices in one chassis. But now I know this is not the case. Much as I hate to say it as a long time Zoom user, I don't think my next modem will be a Zoom. We'll see as I'm waiting for Zoom tech support to contact me about this.

      Share this review

       
      4.0

      Good new cable modem

      By jennywren1420

      from New York City, NY

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I've given this modem four stars instead of five only because it is so new, so I don't know whether it might be better than my old one or not. I suspect that it is better. I got the modem so that I wouldn't have to pay my ISP $[$]a month for a modem that used not to cost me anything. There was a little hassle about initializing it with Time Warner, because, for some reason it didn't happen automatically, but the representative at Time Warner got me through it with no trouble and only the expenditure of a little time. It works flawlessly with my Apple Airport Extreme router, but I don't know whether there has been any change in speed or anything else. The wifi functions are as good as ever. It's a nice size, though a wee bit bigger than the RCA that was provided by my ISP. There IS still the occasional "buffering" symbol on a Website, but I think that is a function of my ISP's failings, not anything to do with the modem. Some people have complained about the bright lights on the front of the modem, but I like that they show so clearly what is on. I would definitely recommend the modem. It is not very expensive, and over the course of the next few months, it will pay for itself. After that, the money that would have gone into my provider's purse will stay in mine.

      Share this review

       
      4.0

      works as expected

      By luke

      from california

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      Easy setup, works perfectly.

      Share this review

       
      5.0

      Great modem for Time Warner

      By MisterDJ

      from Los Angeles, CA

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I dropped my DSL service because of serious speed issues and went with Time Warner. This Zoom model is one of their recommended modems. Minimal installation -- I hooked it up myself, called TWC customer support, gave them my MAC address, restarted my computer, and that was it. It's been giving me 22 mbps down/2.3 up consistently. A great choice.

      Share this review

       
      3.0

      Seems to work after 4+ frustrating hours

      By LorenAmelang

      from Philo, CA

      Verified Buyer

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      In theory the Zoom 5341J modem is very attractive - it can bond eight downstream channels for up to 343 Mb, it does ipV6, and it is approved by Comcast and most everyone else - for seriously less money than the competition. In practice...Mine arrived with a mouse-sized bite out of the insulation on the power adapter cable, with the copper wire showing through. Works, but tacky. I eMailed their support site and the auto-response said they would reply within in 72 hours. It has now been nine days of silence. I powered it up and found the content panes of all the configuration web pages were empty. Just as I was about to give up, I happened to scroll way down one of the pages and found content! Turns out there is a screen and a half of blank space at the top of every web page my Zoom generates! If you print the content, you also get an extra blank page and the content begins partway down the second page. So I tried installing it. It powered right up, connected to Comcast, bonded eight down and three up, flashed its activity light properly, and refused to give either my router or a directly attached computer a DHCP address. When I'd tested it "dry", it did DHCP with no problem. Setting the fixed addresses I could see in Wireshark did not let me access the net either. I concluded maybe Comcast was MAC address locked (turns out they are not), and wasted about an hour calling them and getting no real help. I went back and verified the Zoom did DHCP when it was not connected to the Comcast cable. Turned out the only way to get the 5341J working was to disconnect the coax cable, power it up, connect computer or router, get DHCP, _then_ connect the coax and let it sign on to the mothership. Pretty much the opposite of what you'd normally do. Surprisingly, once it has made this transition, it seems to be able to power up alongside the attached router (the TP-Link TL-WDR3600, a high-spec, low price item that seems to work really well) with no problems. It must retain some state information about its previous configuration, or maybe it just gets the DHCP request before it completes the Comcast connection process. During all of this struggle, it would have been nice to see an internal log, but there is nothing in the config menus. After searching the web I found a clue that you can ask for the log manually. But seeing a log is a game of chance - sometimes if you type http://192.168.100.1/RgEventLog.asp you actually get a log; mostly you get yet another login page. When it works, the page is called "SNMP Event Log". Perhaps if one fired up a proper SNMP client it could reliably retrieve full log items? The log items are not very helpful, some documentation would be nice. For instance:Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC...Most of the entries are chopped off in mid stream like that. So it knows there is a DHCP problem, but that certainly doesn't reveal how to fix it. And while it has the problem, it doesn't put timestamps on the log items, so it is hard to tell which occurred when. It did update its firmware after installation, but I suspect that was forced upon it by Comcast rather than happening automatically via Zoom. Finally, one of the few config pages that actually exists doesn't really work. On the "Security" page it looks like you can change the username and password. Turns out if you type anything other than "admin" in the username box, the change fails. With this utterly un-helpful response:"Error converting one or more entries:Password confirmation failureError: TXOP Max Rate must be in the range 0 to 65535.TRY AGAIN".No clues on the Zoom site. I finally found the secret in someone else's bad review. You actually can change the password, but there is a _maximum_ of eight letters or numbers allowed, with no symbols. If you try anything else you get the same useless error message. No hint at all about the limitations. So I saved $30 and all it cost me was 4.5 hours of frustration trying to set up the Zoom modem. At the moment it seems to work well, providing the same exact throughput as the fancy gateway Comcast wanted me to keep renting. Guess I'll forgive and forget, but if it screws up in the future I'm going to be angry...

      Share this review

       
      5.0

      Works Great!!

      By JJ

      from California

      Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

      I both the zoom 5341J as a replacement for my modem. It works much better then my previous modem. Works with Time Warner Cable.

      Share this review

       
      4.0

      Beats leasing a cable modem from TWC

      By DMAC8

      from Fort Lee, NJ

      About Me Value Oriented

      Verified Buyer

      Pros

      • Easy To Set Up

      Cons

        Best Uses

        • Surfing The Web

        Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

        No issues thus far.

        • Primary use:
        • Personal

        Share this review

         
        5.0

        Needed to upgrade

        By HC

        from Snoqualmie, WA

        About Me Quality Oriented

        Verified Buyer

        Pros

        • Easy To Set Up
        • Fast Connection
        • Reliable Connection

        Cons

          Best Uses

          • Heavy Downloading
          • Networking
          • Surfing The Web

          Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

          Simply wanted to upgrade to a DCOSIS 3.0 modem, the Zoom 5341J has a stellar reputation.

          • Primary use:
          • Personal

          Share this review

           
          4.0

          Zoom is great

          By drmtva

          from SALISBURY, NC

          About Me Value Oriented

          Verified Buyer

          Pros

          • Fast Connection
          • Reliable Connection

          Cons

          • Difficult To Set Up

          Best Uses

          • Networking
          • Surfing The Web

          Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

          Use in home. Works with Time warner

          • Primary use:
          • Personal

          Share this review

           
          5.0

          Comcast modem replacement

          By Mark

          from Seattle WA

          Verified Buyer

          Pros

          • Easy To Set Up
          • Fast Connection
          • Reliable Connection

          Cons

            Best Uses

              Comments about Zoom Telephonics 5341J DOCSIS 3.0 Cable Modem:

              Everything worked just fine with this Comcast modem replacement. Speeds are great, no issues, and shipping time was FAST. Best of all: no more monthly modem rental fees!

              Share this review

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