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False advertising: TZ470 & TZ570 SFP+ support!

The TZ470 & TZ550 fake SFP+ support, They have no support for the "+" 2.5Gbps & 2.5/5Gbps software disabled.

The document lists 10Gbps compatible SFP+ and DAC Cables, is based on the old firmware up to firmware 7.0.0-R906 with the 10Gpbs ports enabled.

Link:Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall TZ series | SonicWall

Support is terrible on this matter many hours with Sonnicwall support (case number 43825314 and 43820508).

How can a customer use the 2.5 or 5Gbps Port on the TZ470 or TZ570!

@Sonicwall support: Re enabled the SFP+ port changes made after firmware 7.0.0-R906.

Category: Entry Level Firewalls


  • blublubblublub Newbie ✭

    I agree!

    The compatibility table lists modules for which support is dropped - that really is a no-go!


    Supporting SFP with 2.5Gb and 5GB only is a deal-braker as basically no fiber modules officially support hat speed.

    I have tried many SFP-T modules, inculding the as compatible listed 02-SSC-1874 but so far no luck - NO LINK !!!! I have tried a manifold of different SFP and SFP-T modules costing me 500€+ for the TZ570 and my switches - total waste of my time and money

    Why was SFP 10G dropped???????? - for the sake of product segmentation just support 10G Link Speed for SFP and SFP-T and then software limit the throughput to 5G for differentiation from TZ670 - THIS CANNOT BE SO HARD!!!!

  • MitatOngeMitatOnge Cybersecurity Overlord ✭✭✭

    some of 3 party products not working properly. did you try different brand products?

  • blublubblublub Newbie ✭
    edited May 17

    I have tried several SFP modules, from sonicwall over FSP custom made for TZ570 to "generic" modules - it just doesn't work.

    I even got to a point where the LEDs on my Cisco swtich showed "link", even the Cisco UI showed "link up" - sonicwall showed "no link" - this more than annoying right now!

    The whole point here is the above linked compatibility matrix - they show modules as "compatible" which in another KB they mark as "unsupported" - seriously that some tough stuff to digest if you buy a FW for 3K€, look at the compatibility table buy a module and the find out there is "another KB article" marking the module as "incompatible"!!!!

    Module: 01-SSC-9785

    Marked as "ok" for TZ470/570

    Marked as "unsupported":

    And all that is completely unnecessary as as the could just support a 10GB link to make it an easy connection and then limited the speed to 5G on the software side - everyone would be happy!

  • MitatOngeMitatOnge Cybersecurity Overlord ✭✭✭

    I have checked Link speed options on and my products, Sonicwall has removed 2.5 and 5gig options. this is a bug. Because tz470 supports 2.5gig and TZ570 supports 2.5 + 5gig.

  • blublubblublub Newbie ✭
    edited May 19

    I do have the link speed option, that is not the problem . The problem is that there are no compatible SFP modules to make a connection and that Sonicwall lists modules as compatible which actually aren't - see above - that is the problem.

  • SliderhomeSliderhome Newbie ✭

     On with the tz 470, 570 and the 670 there is no opion to set the link speed. This problem is only on the  Livedemo site.

    On the real sonicwall you can set the link speed.

    Same as @blublub, there is no compatible SFP+ modules, This is why I made my case "False advertising". It worked before sonicwall made changes,

    If no SFP+ or DAC cable wil work (only 1Gpbs) with the tz470 & tz570 you can never use the 2.5 or 5Gbps port speed.

  • blublubblublub Newbie ✭

    It is a complicated issue if one looks closely.

    The removal of 10G support means the following:

    NO 10G Fiber connections - since there are no fiber SFP modules for 1,5 and 5GB ti just means that fiber is useless

    In theory this leaves one with SFP+-T modules for CAT6a connections which very well can do 2,5G and 5G.

    The difficulty is to find a working one.

    The modules I have:

    FS ca do 2.5G -

    FS AQ Solution can do it (according) to FS

    Sonicwall / and compatible - 02-SSC-1874 - should be able to do it -


    With all those modules it is impossible to make a conection from a TZ570 to my Cisco switch - Sonicwall just says "no Link", so by all of what I can find on the internet it is a Sonicwall isssue not accepting the Links speed and/or model - and please remember folks: one of those is a Sonicwall 02-SSC-1874 module and I do not even get a 1G link....

    This is beyond frustrating, it cost me hour and hours of testing and hundreds of € to buy SFP modules - yea sure I could go lie I do not give a F and replace the brand new TZ570 with a TZ670 for another 4K€

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