The 2 Internet ports are 10G SFP.  So I assumed I could used other ports for Internet traffic and use my copper.  Nope.  So I had 2 Cisco RJ45 SFPs and tried that.  Nope.  Then I had 3 brand new 2960Xs installed the same day with 10G uplink ports.  Installed the Cisco 1Meter 10G DAC and you would think the ports would work then.  Nope.  Called support (On hold for 30 mins on a Saturday afternoon).  Only Meraki SFPs are supported.  Really, Cisco SFPs are not supported?  This is ridiculous.  Now I am looking at telling the customer we need to get Meraki SFPs.  I want to use the 1G copper SFPs.  No where does it say it will work.  The documentation only says the ports are 10G SFP.  Do the Internet ports step down to 1G Copper?  Nothing documented.  None of the SFPs on the web site say they work with the MX'es.  When I get to the Copper SFP page it only lists the switches it works with.  On the MX250 page it lists the 1G Copper SFP but click on it and and it takes you to the page that does not list the MX as supported.    Really hard to sell Meraki products when I keep running into this.  Got burned in labor for almost 30 Meraki switches with fan issues we had to replace after installing them.  I appreciate that Meraki sent them in advance of them failing but then there is the labor and the outages the customer had to go through again.       Rant done... So here is the question.  Can I use the MA-SFP-1GB-TX on the Internet ports on the MX250?   ... View more